I have three of the four pairs of tunnelram carbs I have used over the years. All holley. I have 450's, 600 vac. secondaries with balance hose and 660 center squirters. The 750's are gone.All are complete and were working when removed but would need to be cleaned and freshened up. 200 per pair for the 450's and 600's and 300 for the 660's plus shipping.