This is the stock impeller that comes on SN 89, 92, 93, 2000 & Novi GSS superchargers. This is a 4 to 5 PSI Impeller on a 302! Asking $100.00 obo. Payable thru PAYPAL Please e-mail @ cwmerc88@charter.net, or call 423-335-5757-if no answer please leave message.