you have 2 options...
1. you can go to a perfromance shop that dose conversions and will make you one to fit to what you have and measure every aspect and get a good very thick xmember, but you know its done to suit everything you need..

2. buy a maddat kit and hope your chassis is not twisted and everything is on the money, worse case you gotta start spending $$ to aline everything.

you chose i did not bother with a maddat kit for my 13b rotary as my mechaic said he can make better and work around what i needed done ie: lower the engine more/raise more, supra gearbox xmember mounts, tailsharft measurements and i got a good deal for a quailfied performance shop to measure and line up everything from raidiator, engine, gearbox, tailsharft, everything in the drive train for $2500

oh and a very large gearbox tunnel welded to the floor.

now i just need very basic wiring as my car in not injected but carbureted...

so basicly is it worth the hassel and stress and bleeding knuckles when there are ppl out there who can do it for a lil bit of $$, but done 100%