[plathegame]

there are no aftermarket performance parts specifically for the riv.. you have to see if parts from other gm models w/ a 3800 sc like a gp, bonneville etc can be made to work.. if you have stock tubular exh manifolds (non cast iron) you really wont gain much hp by switching to headers for the $$.. best bet is to go to an exh shop and have them replace the restrictive resonator pipe after the conv. w/ a straight pipe for starters , install 1.6 rockers and a cold air intake w/ a k&n filter