1 pointA solid axle will be your best bet on a budget...both in dollars and time. A first gen RX7 rear axle would also be a Good swap with LSD and 4:10's out of the box. Correct bolt pattern too! (GSL-SE) For IRS, I'd suggest a MK2 supra rear setup. It's a simple mount and should be close in width. 4:30's and LSD standard equip on P-Type manuals. Not to mention I know where you can find both of those!
1 pointRight, thanks for the correction Mat! I meant that the lapping session ran for a certain time, but can't English today. English is weird, but it can be understood through tough thorough thought, though.
1 pointanother ambitious build... good luck