Ok, ive searched a few times but cant find the answers im looking for. Ok this weekend i am goin to delete my a/c. I have a upr smog pump delete bracket, and i will also be puttin on a oriellys idler pulley, which is a tad bit smaller then the stock pulley. Dont kno why but it is a bit smaller. My belt is slipping as it is so i figured id go ahead and do the delete and get me a gatorback belt. Does anyone know what size belt i will need if i take the compressor all the way out, and put the oriellys idler pulley on. Oh yea, i have underdrive pulleys but i left the stock alternator pulley on so that makes a small difference. does anyone know the size belt or how i can check to see the correct size i need.