1983 Toyota Starlet 4g63 swap?

[YFZracer32]

Well i just recently picked up a pretty mint toyota starlet that i would like to swap a 4g63 into. I will be running this with a R154 tranny, how much of the trans tunnel will i have to cut? Will custom motor mounts need to be used or can i buy a set somewhere? this is going to be ran off a 90 talon tsi harness and eprom computer. Does anybody make t4 or t3 flanged manifolds that will work with this swap and not hit on the shock tower or will that have to be custom too? thanks for the help