Hello all! I am new and I just want to say thanks for having me. Anyway, I have a 73 duster that is currently an A 230 3 speed with low first gear and a mild 360, 2.02 heads, 9:1 compression, flat tops, and a comp HE268 cam. Was wanting to go to an overdrive manual. I began thinking... why not go to a four speed and then pick a smaller rear gear of 2.76. (Of course in a 8 1/4, no 7 1/4 rear ends here) I was thinking that the low first would make up for the 2.76 gear and the 1:1 4th would be a nice overdrive type gear. Or is there another gear between 2.76 and 3.23. I'll be running a 27 inch tire. I just want 70 mph rpm to be about 2500 or 2700 and liveable. 3200 rpm just is too high for me. I live near the interstate so Alot of my trips Into the city are interstate,30 miles one way. Any thoughts or experience? Or am I trying to have my cake and eat it too.?