hey guy i got some Underdrive pulley kit "crankshaft and alternator pulley groove" for my truck. my truck is a (2001 gmc sierra 4.3l sport bed) but i ordered ones for the same motor but for a different year they are for a 88-95 my question is.... Can i use them since they are for the same motor (different year but 4.3l) or should i sell them and buy the right ones for my truck
please help i am desperate for a little hp lol.
thank