ok guys, I ended up with the pro reisistor set, was going off the web and didn't realize I wasn't ordering the spiro pro. should I send these back and get the others, its just a 12 buck difference it looks like, and the hassle of shipping. will I see a difference? engine is about 425hp (with cam specs in an online calculator, not counting any port and polish work on the heads). going to have a radio/mp3 player inside, that's about it.

thanks a ot for the help. I got the black ones by the way.