Depends what tune you are looking into. Where in Jersey?
South Jersey = Usually Sideways Rally Team (USRT).
Hit up my boy Justin over there. He is Unitronic.
As for a garage(s) -- I know of 'Volks Tech'.
If you don't mind driving 30 minutes (South Jersey), then I would recommend BradFab in Media, PA for any welding or heavy installation work. He also specialized in bag setups.
He put my headers in for me and fabricated a custom mid-pipe -- his pricing is exceptionally competitive and he speaks English... His name is Steve, by the way. Let him know Brendan sent you.
NLS's full line of parts on our online store!http://nothingleavesstock.com/online...=0&sort=normal
Email us at email@example.com 230 E. landis st. Coopersburg PA 610 282 5487