universal exhaust on 85 4kq question

[MFZERO at aol.com]

listers....
  i wanted to add an after market exhaust to my 85 4kq, but i cant seem to 
afford the scorpion or 2bennet exhaust systems. i just wanted to ask everyone 
what they're feelings were towards stainless steel exhausts. what would the 
outcome be.. loss of back pressure? loss of torque? gain in any aspect 
besides noise level? it only $100 bucks including tips (yes tips plural to 
givit that sporty $800 scorpion look) from local car audio/performance shop. 
still need to get an estimate on the work tho. before i spend my cash and 
waste my time please let me know if its good, bad or what have you. thanks 
you very much

_mike_