90 BII 2.9 to a 4.0 turbo

[80351]

I have a 90 BII with a 2.9 auto and I want to put in a 4.0 turbo
out of a 90 something Turbo coupe. What problems am I going to
encounter? I will have the complete car so I can change out the wiring
but what other little problems am I going have?

I've gotten some advise around the Internet but I figured I'd ask the
masters.

Thanks guys