This is a new motor compared with your old charade, Toyota is using them. No stupid balancer shaft belt to get tangled up. It's multi point injected. It does have a timing belt but nothing is perfect.
I never like the clearances you're left with when fitting a Suzuki GTi motor.
The toyota E motor is bigger, I've seen them fitted with custom subframe.
The CG is reasonably compact, probably still quite a squeeze & certainly unknown. It does rev much better than a GA ever could, given the low factory redline & reputation of the rods in the GA. With Nismo bits & $$$, the CG'll rev past 10,000rpm. There's a guy with one mounted North-South in his datsun rally car over here.
Budget approval from the finance department can be difficult.