Hmmm, downsides... With the MSP you'll miss the trunk space of the SHO, since we lose some space to the sub. Interior space is smaller. Seats are better by a bit, overall build quality is night and day better. Said it before, say it again, the only other car as fun to drive and direct is a Mini S, but then only barely, and they're tiny. NVH is no real issue for me, but I'm also thinking of dynamatting. Above comments on the "Z" probably relate to the difference betw. RWD and FWD, I can get a great 4 wheel drift out of mine but only at sick-insane speeds or in the wet. It'll be like "rails" compared to the SHO, even with SHO mods, mostly due to weight. MSP even has decent ground and chin spoiler clearance for a car that appears "lowered", and corners flat. I've never had a car as good at lateral movement as this one, and that includes several well modified A2 VW's (16VGTI, GLI). Enjoy - and good color choice. Check other pro/con threads ,there have been plenty.