Handling and weight balance aside, the 2JZ is an old-ass motor, and a stupid swap because no one else is going to look at it and say "oh yeah, it's totally feasible for me to do that!" The last 2JZ engine was offered in what, 2005? It would never be emissions legal in all but the most careless states, and the platform has been beaten to death, so why not work with the new engine and push the FA20 forward, rather than going backward? That to me is the equivalent of watching NASCAR. The car on the outside looks like a Toyota Camry, but underneath its a tube frame chassis with a (now only recently fuel-injected) big V8 and a solid rear axle. Nothing that normal people would ever aspire to. ("Hoo-doogy! I just bought this brand new 2012 Camry and I'ma tube it and put a big ol' honkin' V8 in there! 'Merica!!") At least if you're going to do a swap, put something modern in there that can potentially be road-legal. Just my $.02
But as long as we're talking ridiculous swaps, how about an LF-A motor?
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Current: 2005 Porsche 911 Carrera S 6MT
Previous: 2 BRZ's, 997 C2S, C5 RS6, C4 S6, B8 S4, GDB STi, S30 240Z, FC3S RX-7 TII, AW11/SW20 MR2, E30 318is/325i, etc.