thanks soo much for all the information friends, iv thought of jus leaving the original torque tube set up an all but i dont really want to put $500 worth of 3:55's or 3:30's of ring an pinion in orig rear end if the trans cant hold up to 55+ speeds, which iv heard? jus not exactly sure wut do. i jus want to keep column shift, stomp starter an go 65mph max i guess without any probs with any of it, an if so be able to find replacement parts an all semi easily for drivetrain.