I see a Chevy Rod engine in your future. Custom pistons. Maybe blown out to 2 liters. Vizard head. Totally stock from the outside. Lots more fun inside.
Jim, that's tempting, however I was actually thinking about a Ford Zetec with a modified Type 9 5-speed, all without modifying any sheet metal or steering, shifter in the stock location. It would look bone stock until you popped the hood. Not a real fire breather but 150 up to 200 hp should be reasonable.
Considering how long it takes me to do stuff this is probably a total pipe dream. Plus I don't want to take our Alpine off the road for an extended period of time. Maybe pull the stock engine, work on the swap for awhile, put the stocker back in, drive awhile, rinse and repeat... I know, go ahead call me an idiot, I'm used to it.