[The Fixer]

Wait, you're talking manual trans, as in a T5 5-speed? From what I remember, a T5 from an early V6 car only has a 10-spline input shaft so you'll need a different flywheel/clutch combo when you're swapping it onto a V8, and you'd also need a V8 bellhousing. And I also seem to remember the V6 T5 internals being rated at even less than the V8 parts, so you will most likely blow it up after all that work anyway.