3 speed manual and 2.76 gears with /6

IMO I would go a little deeper on the gears, and the reason I say this is that in 1970 I bought a 440 -6 cuda with auto and 2.76 gears and hated driving it in town(what a pig )but out on the interstate nothing could touch it (not the hi-way patrol or anyone else) and because I had to put my foot into it in town to move along I got poor mileage too.

It had a 160 speedo and would peg it easily but the handling at that speed was so bad it was scary