Simply put: yes. A 415hp turbo pancake six, plus six speed transmission, plus suspension out of a 2001 996. Maybe not the simplest would-be transplant (or the cheapest at $25k), but if it were easy everyone would do it, right? Along the same lines, while more than doubling the output of an older 911 (or 356?) might be tempting, an intra-Porsche swap is no good here.
The options are manifold, but obviously lean towards rear-engined examples. Personally, I’m sure the Baja Ghia could use a few more ponies. More absurd: something like a Corvair Greenbriar. Most absurd? Up to you.
Porsche 911 996 Twin Turbo Engine Transmission – eBay Motors, from LA Dismantler, which looks like a place we may need to visit.
Hat tip to DamnElantra!