I've been driving my 1994 Chevy C1500 W/T now since early 2012. I just rolled 417000 miles with the original 4.3L V-6. I'm on my 3rd Getrag NV3500 5-speed transmission, the one it came with, the used one I put in it, and finally, the rebuilt that's still going strong. I've put a set of Good...