I have a 91 GMC truck. It has a TBI 454 / 4L80E trans. It use to be a 1 ton dually, but now its cut down to a short bed with 1/2 ton suspension. It runs great, but would love to compare the BIN to a 1991 454SS truck. I cant find it on here, probably cause I do know what to look for. Can someone point me in the right direction? Or have a BIN I can use?

Thanks