I have a 89 dodge van 1/2 ton with 3. 9 v6 in it, has anyone heard of being able to put in a h/d transmission??? like ones for 1ton or 3/4 ton will it work better than light duty one,with that engine and drive tran with out over torquing the rear end. I left the little transmission in the road and tore it up BADDDD.