There's a few RX7 conversions around here. There was a nice 2nd Gen with a LS1 in it but it was rolled. There's a 3rd Gen in CMY color, also with an LS1. a nasty 1st gen with a clunky 302 Ford, automatic, and a redneck-looking hood scoop was beating around town a few years ago.
Remember the Dodge Conquest tsi? There's a few around here that replaced the Mitsubishi turbo powerplant with an LS1. Well done work.
also: early 90s Jaguar XJ... pulled the V12 and inserted a Chevy 350. Well done.
Saw a Triumph Spitfire with a 302 Ford and another giant hood scoop during the Woodward Cruise. Yech.
Finally, there's a Cadillac Catera that was superbly re-made into a V series. triple black, +2 wheels, V badges and vents, and oh, a Northstar V8 32 valve under the hood! One of my favorite transplants of all time.