audiobob brings up an excellent point. they would certainly not 'hand' over to you the original parts replaced by the aftermarket upgrades. no, those would go straight back to them.

and jwarren is absolutely right. the "factory performance" kits are ripoffs for prissy boys who are too lazy/unable to make aftermarket modifications by themselves. the only way i see myself or anyone purchasing these kits is if the dealer makes an excellent offer on them. which i can only see happening, given their ludicrous prices.