I like the top one a little less distracting without your car in the background.
I'm no PS expert but if you can get the whole image with a black background and a red border would look more uniform. Right now it looks like two completely different images stitched together.
Eh...they're kind of puny to me, but I guess they're not bad for bolt-ons. I've got a few mods left that I'm hoping puts me close to 320 rwhp and 350 rwtq - 1.7 roller rockers, 52mm t-body, 3.73 gears, and 2800 stall - and should get me close to 12s (5000' DA).