I am installing an LT-1 and 4L60E from a 94' Vette in my 71' Camino. With the added H.P. I've been thinking that I should probably put a posi rear-end in it too. Can someone suggest who is a good company to deal with? Also, if I'm just using it for cruising and the occasional road trip, what's a good gear to be using with the type of engine/trans combination I have? I live in N.W. Ohio. Thanks in advance for your comments!