Without a set of rules in front of me ,it is difficult to say what to do. What is allowed to be done. And more to the point what have they told you can't be done !! Tony's car never ran as a sports sedan but I guess you are just using it to define the style of modifications. A lot of weight can be saved by using lighter components in the suspension which in turn results in better and sharper handling. These mods can be done step by step as finances allow. I'd start at the front with the struts. Can you shorten them? 50mm out of the pushrod and body is a start. This compensates for the threaded sleeve you add for the adjustable spring seat and all of that can be made of alloy . Alloy calipers shave weight as do hubs. Drilled vented discs on alloy hats .Fiat 124s and 125s have beaut alloy racks that work a treat in 1200s. Are you allowed replica bumpers and alloy mounts of course. If you are required to use leaf springs remove all the leaves and use coilover shocks. Alloy drums from 240Zs work well and are lighter than a disc set up. Do you need to run an alternator , can you run a total loss set up and just recharge the battery. The steel panels are pretty light to begin with but you could still remove all the inside bracing on the boot and bonnet. I always follow the practice of looking at the weight which must be added eg rollcage balanced by the equivilent weight that can be removed. Aircraft parts suppliers have some amazing fittings and fastening to save weight in planes which can be used but they can be expensive. Alloy driveshafts fall into this catagory. And another hint that a lot of guys miss, keep the exhaust system simple, tube is weight and mufflers are worse run the bare minimum and as short as possible out behind the drivers door to the side if the rules allow it. If you have already tried all of these tips its time to acid dip the shell and engine block !!!!!!

To keep it simple the rules state

the body must remain complete apart for a small amount that may be removed to clear tyres and excess brakets may be removed

Any additional compents to the suspension (eg coil overs) shouldnt compromise the cars ability to drive if removed

so removing leaves to fit coil overs isnt an option either had thought of that

first up, i've never raced, so maybe i should keep my nose out of this, but i thought i had to ad something:

Wouldn't it be worthwhile to keep the car balanced as in 50% of the weight to the front of the car, and 50% to the back rather than go extra extra light on everything, and making it more like 70% to 30%???

I know what its like driving a ute on the road which must be about 70 - 30... it gets loose really quick, and once you start sliding, its hard to stop.

when im not sitting in it my coupe is 52 48 splits

ahh, no problems there then

Oh PS put a set of coupe springs in your ute you will be amazed at the difference

but make sure you still retain the over riders as it does compromise there abillity to carry wieght

Sound like similar rules to our SS2000 series. Though I would argue with a scrutineer that the only added component to the rear suspension was the coil spring.......the shock and single leaf will support the lightened car enough to allow it to be driven ...

The other idea i had was to make alloy replica bumpers but i dont think this is within the idea of the class

I know Dattoman has this setup in his green sedan. He has eliminated the leafs and has 2 trailing arms originating from the front leaf carriers to the axle carrier. The shocks are at approx 45 degrees and are a coil over design. (very nice setup mind you) however I dont know if it helps in A) weight and B) and most importantly handling on the racetrack.

this would help handeling if setup right but the prob is the rules dont allow

sounds good though