There's been a few people here who have fabbed headers, or had them done for them. None of them looked to be real horsepower adders in my eyes though, they may improve sound, but I can't see them shaving much off the quarter mile times.

Probably the best mod you have listed is the ECU programming...there's a few options there, and everyone has their opinion on who does the best job.

The sprintbooster is a device you plug in-line with the throttle sensor (at the pedal) that fools the body controller into thinking you are giving it much more gas than you really are, i.e. if you give it 1/4 throttle then the computer thinks you're giving it 1/2 throttle. There's a lot of people who find merits with this piece of equipment...I think the best place for this is on a automatic transmission vehicle. I have a stick, so I've never tried it.

By all means drive a Crossfire...Like has been posted above...most people who drive one end up buying one!