Evening listers, I was looking up the tail end of my 1979 304 crankshaft that had a SR4 Borg Warner 4 speed manual behind it, when much to my surprise I noticed a sponge like pad inside the pilot bushing hole in front of the bushing. My assumption was that the sponge was there to act as a lubricant reservoir for the pilot bushing. Have any of you guys seen this before? I wonder if that nifty little sponge piece is still available? Maybe from Jeep? When did AMC begin using this? I don't recall seeing this nifty trick with my 4 speed Camaro many years back, but of course GM was years behind AMC when it came to making things reliable. Now the bad news......... I discovered the hard way that I should probably be using a bushing driver to drive in the new pilot bushing into the back of my 70 304 crankshaft. I got it cocked in there and then with my oily fingers I began losing control over the socket I was using as a drift (don't try this it didn't work) and I bunged my new bushing. Oh, well back to NAPA for another one............ That guy at NAPA loves it when I walk in because he knows I drop a chunk of change every time I see him. Any body got a good home side remedy for driving this bushing in? I don't really want to drop 50 to 75 bucks to buy a driver set and use it once. Thanks, Armand