I have the U joints the yoke and the cross over member.Will 3 speed ball collar housing work.I just put 3.55 ring and pinion in .I do not carry any wight but I do not want to slip the clutch.From a dead stop, climbing a grade or pulling in to a tight space will the 4speed lower gears help?I must check and see what trans it is,SM420 Burge and Wearner.