To get the 3.90 gears, you need a '63-'72 pumpkin, anyway. Might as well just get a 4.10 and save $500. The 3.90s are a waste of money for the minimal improvement, IMO. If they were 3.55 or 3.70 gears, it might be a bit different.


Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE