I thought swapping-in a 4-banger might seem a little too hairy for the purists. I really want to keep the 4WD. Really, really. But I also want better fuel economy if I can get it without breaking the bank to get there.

If I went with a 4-cylinder, I kinda like the idea of swapping-in an LHU from a 2012 Buick Regal GS -- supposedly, it's the same basic engine as was in the RWD Solstice and Sky, but I dunno what has been changed to make it a FWD solution in the Buick. Would it be a simple bolt-out the 350, bolt-in the 2.0 (using the wiring harness from the Regal, at least for the ECU)?