I have a 3600 1948 so not as big as the 3800 (but that is my next wish) but My 3600 does great except like you said above on curves or with ruts in the road at speeds above 50 to 55 with a 4.56 rear end. i have radials, 16 inch wheels, good knee action stock shocks, good springs, alignment etc, but I am wondering about these sway bars that you are talking about. would it be of benefit on a 3/4 ton, front back or both and what vendor would you use? thanks