I’ll be at Moore Park Beach to visit my parents over Christmas. Normally I stop at the Promised Land in Cordalba.
Have a read through my build at Not quite track. Mr Gormsby's L200 hopefully some info will be of assistance. What sort of competition are you looking at doing? Or have done in the past?
Regarding traction you’ll want an LSD. EF series gearboxes if up to 110hpatw an Sirion or L700 box if more than that. Plus a jack shaft set up to reduce torque steer (long shaft winds up).
13" wheels: for brakes M100 front discs; M100 drums and wheel cylinders work (one wheel bearing gets swapped); a little work to get Appluase rear discs to fit; cross over rear brake lines are a pain, and a single line better so you can run an adjustabe bias valve; and master cylinder does not need changing.