Bran, to be perfectly honest about it, I didn't realize that bit of info about the clutch push rod.
I did find out, by going all the way back to 71' or 72', that the P/N 22850-292-020 was superseded
by 22850-323-000. I can't say about the original 450 pushrod, but the ones I've seen were alloy
tubes with inserts in each end. BTW, I've sent Bryan a PM on this. I did go ahead and buy the clutch
pushrod tubes off of ebay.
Later on, Bill