The thing about transplants is you have to make sure the body doesn't reject the foreign organ. That's not the case with this 1974 BMW 2002 built by A1 Imports Autoworks in California. They replaced the original 1990 cc with the 2.5-liter S14 from an E30 M3. Not just any S14, but the S14 EVO, a limited-edition 1989 variant. Stroker kit, check. Hoonage potential, off the charts. Call it a DIY 135i. [Thanks to John for the tip.]

Related:
Engine Swap of the Day: V8 Manta! [internal]