modify

  1. M

    1991 GT Conv ALL STOCK what should upgrade?

    Hi, got a 1991 all stock conv GT and trying to keep it factory as much as possible but was wondering what would be simple upgrades to get a bit more HP or upgrade any things that would benefit the engine in 2011 technology that in 1991 wasn't that great. Oh, an by the way its a 5 speed as well...