Jz is our friend but he has good hold of Rx8's but unfortunately his prices are sky rocketing.
I just restored a Rx8 with a 3uzfe v8 triptronic, we painted it from the scratch with Pepper grey met paint (vw paint code) and the whole project costed around 36-38lac.
We did body work,music system, Airconditioner, interior, electrical, and the owner swapped engine from someone else earlier for around 11-15lac with suspension and stuff. Then he sourced abs and some other stuff too.
Probably the car was acquired around 18-20lacs from Jz bhai by him. But it was a good chasis. But this was a year back
So plan accordingly, like what do you want. According to your budget.