hey mate

Heres a tip.pickup a full running sr/ca s13 or 180sx and u can save heaps.esp the ones without rego/rwc but in good nick,all the running gear will be there.Don't go buying engine by itself etc etc Strip whatever u want and sell the shell or parts to reimburse ur money.plenty of market for silvia stuff.

The rest spend on engine mounts etc whatever u need to get an engineers certificate.There are ways to save on builds.

Bodywork i think is what costs heaps if doing a proper ground up restoration.i myself prefer rough body cars.if car gets hit all you have to do is transfer its gear to another shell etc Cars with very expensive bodywork paint kinda become very hard to drive as dailies.cant park at shopping centers, always in fear of debri chipping of 15k worth of paint etc etc

Some guys import worked/track cars from japan which wont be complied in oz just to get their high hp engines and performance mods and saves thousands as compared on buying turbos ecus etc etc separately.They then sell the parts of them i.e racing chairs, doors,body kits ,doors,6pot brakes etc and recouped heaps back.