So i just got a deal at the junkyard close to where i live, was looking for a 10 bolt rear axle and he said $150(drum to drum with coils and arms) I told him to cut it out. He calls back an said to come back as he had some questions. I get there and he shows me a car he already had tipped on its side(sitting in 2ft of snow) its a 12 bolt that im getting for the same price! Seemed nice and tight, no posi but no biggie. I didnt get the numbers off the axle but im sure its going to be a pretty low ratio. My question is what gear ratio would be a good choice? Car is 66 impala 2dr hardtop, 355 with projected 400 hp, xe268h cam, vortec 062 heads 650 edelbrock. Will get a beefed up TH350 and 275/60/15(28" tall). Live in rural MN, will be driving alot off 55mph county roads60mph hiways and maybe a 20 mile jaunt on a 65mph. I want the rolling burnout type of car, but not screaming down the hiway. Any opinions or suggestions? Also planning on getting a stall converter as well, how high should i go?