I didn't get a response over at truck site so I thought I would ask here. 1964 D100 Utiline short box. I'm thinking of building a STOCK (peanut head super six 2bbl) /6 and changing to AT (A904 non-lockup) and adding AC. The truck would be strictly for driving to shows or road trips. Would it get out of it's own way and do Hwy speed say 70-75 mph. I have 2.76, 2.94, 3.23 and 3.91 gears to choose from my stash. I had a 80s something LB Ram with a /6 but, it didn't have AC and I don't remember the rear end ratio. It wasn't a hot rod but, it went 70-80 mph on the highway. The 64 now has a A745 with 3 on the tree and 3.91s. 60-65mph max any higher seems too much rpm but, never checked it. I'm lowering and putting in SIDS axle with disk brakes plus power steering. What do ya think?