| Message | 
pruchase one of their options and then install yourself.  The install is very easy, just a matter of getting under there with a ratchet, breaker bar possibly and doing the work.   If you are looking to just buy something and drive off same day, I doubt any local speed shop has Z exhausts in stock.  I have lived here in San Antonio for 10+ years, 8 of which I have owned a Z.  In that time, most shops either have nothing but Honda type stuff in stock, or they dont cater to the Z for the most part. 
  | 
  |