Last Sunday I brought home an '84 C20 with a 6.2 that the guy "wanted out of his yard". It's a pretty clean truck with brand new tires and a 10K mile TH400. He was driving it every day until one morning it wouldn't crank. He was told the injection pump was bad and I guess the cost to fix it wasn't worth it to him. I had another 6.2 with a good pump, but cracked cylinder head that I was gonna swap. My question is, do I have to remove the water pump to release the I.P. from its drive gear? If the drive shaft slid right out of the pump, is it junk or can I put it back in? Also, where is the best place to get a reman pump? I'm not looking for blazing performance, just a good reliable truck to haul stuff around in its 8 foot bed and maybe tow the occasional trailer.