Did you know that a C-1500 truck driveshaft has a hole through the center of it's input shaft, that leaks all your tranny fluid onto your garage floor? Yup!, this will happen when you are using a late model F-Body Camaro 4L60E, together with the truck driveshaft input. I guess the suspension travel is greater on a truck, so they needed a relief hole down the center, so it did'nt act like a piston & blow out the internal tranny seals? Anyways, what's the answer to this problem? I don't go off-roading or anything...it's a street truck...should I simply weld up this breather hole, or is there another seal or bushing that should be added to the inside of the tailstock?, or...? Help! Thanks in advance, Gar