Thanks! If you've built/driven other rear mount turbo cars and like them it's all good, just a matter of preference.
I think the Cadillac has a bit more room than the Chevy though the car I was speaking of was a 57 Chevy with LS3 and 2 small turbos. Has stock 5th gen Camaro manifolds in original orientation with up pipes sweeping up and forward into the turbos.
Looking forward to your chassis pics