I have an FE in my car. I built my car for me. I was not really going for resale.
With that said if you are looking for high horsepower at a decent price point a 385 series engine is a good choice. I'd prefer that over a stroked 427 small block.
I would not go Roush though. The warranty is not so great in practice, the reputation is not so great.
I'd talk to Brent and see what he suggests. He can also help you with clutch, trans and gearing suggestions. All my research suggested the Roush stuff was not a good value.
Lykins Motorsports, LLC
Good luck!