I bought this 15 yrs. ago from Barney when he was still in business and doing his own machining. This project isn't going to happen, so time to let it go. This is for the GMC 4:71 blower, but others could be adapted. I was going to use a 3:71 myself. Price is what I paid for it (have original invoice) and includes shipping in the lower 48. Happy to answer any questions, just PM me. Thank you. SOLD.