Thank you for your replies. I think I will install a tach to see exact rpm I am turning. 3000 rpm should be safe. I have new brakes all the way around and have installed bendix style lincoln brakes on rear. Stopping isnt an issue. I live on eastern coast of NC so mostly flat land here. If I drop one gear I am back to same gears as old transmission. Finding different ratio for rear is close to impossible. So I went with the T-5. Plus it was cheap.