Dude screw shorties and do yourself a favor and get LT's. Shorties are gonna be a waste of money. You can get lt's for under $500 easily. Byy BBK's off ebay brand new were only $400
i wouldnt waste my money on shorties.... theses 4.6 respond much better to longtubes..... shorties gain a very small amount.... and $500 will get you either one but unless your doin the install prepare for a big bill....
thanks for the replies! that helps a lot, i will definitely look at lt's instead, and yea ill be putting them in myself. I aint gonna pay the bill to have someone else do it. It is much more fun when you do it yourself
without knowing what is on your car, I would start out with a PI intake and cams, then go with headers after you get some air moving. If you already have PI gear, get LT's.