try to get a mandrel bent system if going 2.5... then you'll be fine
if you aren't hackin the cats, look into some magnaflow/carsound high flows to keep it legal and not pollute anymore than we have to. JL posted some really small packaged ones he found for a decent price a while ago
I bust ARP bolts by hand...
If Guns kill people, then...
...pencils miss spel werds
...cars make people drive drunk
...spoons made Rosie O'Donnell fat
~Gun Owners of America