i recently acquired an 86 C20 with a 454 and a th400. I like to drive the truck, do not tow with it or hot rod it. I do a lot of 60-75mph driving and the 454 with 3.73 gears scream on the road at those speeds. Would a stock 700r4 hold up to my 454 if babied? I really do not get on it at all and the only plans are replacing the stock headers with a set of cheap long tubes.