cool, is this kit from mcdonald brothers? killer, to change to coilovers you would need to change to a four link system with a panhard rod. a lot more work than the 2 link, which is used to eliminate axle tramp primarily.

how much do you usually pay to have this sort of thing done? and is it worth doing if you plan on putting out a bit of power?

My mate has cut the rear end out of a sunny and is going to put it in his 120Y, he reckoned it would be fairly straight foreward

Could somebody please explain the point of this modification??

As far as I can tell the trailing arms don't stop any sideways movement, they must be adjusted to pivot on the same axis as the front of the leaves and I don't see why they would even eliminate axle tramp?

axle tramp happens when the diff torques/twists up and changes the angle etc. Those bars prevernt the diff from twisting forward which stops the tramp. Hope that i explained it right.

Yeah I can see it now, thanks.

so now you just need to modify a falcon watts link( thinks thats what its called) and put that in
much cooler than the commodore panhards that move the diff off centre when you lower them

caltracks is another name for this type of setup. as said above it stops the housing twisting and 'tramping' the tyres. i guess its only for take off kind of situations. its a more refined version of tramp bars which i used to run.