66 barracuda modern v6 swap?

I've contemplated doing a modern engine swap in my 64 Barracuda. I was thinking an SRT-4 swap for mine though. Light weight, similar power to a V8, and they can be built on a budget. Plus I already have a holset Turbo.

If you are good with wiring and can fabricate mounting brackets I would imagine it wouldn't be that hard of a swap. You may have to research oil pan clearances and transmission clearances as well. Are you thinking manual or automatic? Modern or original transmission? Modern bits will make things more complicated.