I've been pushing this MC5A with the DD8V71 / 4 speed Spicer package up and down the roads for over 2 years now and have come to this conclusion:Between the Engineers at MCI and the Bean Counters at Greyhound (and others) someone definitely had their act together. For that era, remember the choices of engines and trannies we have now didn't exist then, this was the best package available....and in my opinion still is. I'm not the first one up the mountain (on those rare occasions I tackle them...and we LIVE IN the mountains) and I'm the last one down, even with Jakes. But when I consider the cost and labor in attempting to improve what I have...re: Boogiethecat, as against what I hope to achieve I believe I'd be shoveling $hit against the tide.FWIWBob