1965 Barracuda......advice needed.....

maybe the SM102 changed to a small cam with the same operation but more applications? (Think AMC pushrod oiler lifters being sold for Mopar too)

You really need a Mopar 2258704, not the stated 2631383, 2822170 thats on an Ebay listing. If the MP part number scheme is like Fords, the first 2 numbers denote the year the part was designed, ie the 26,28 part numbers were designed later than the OEM 22 part number. Which is totally on point as I just learned, good up to 1969. The "22" is a '62 part (first 2 is 60's, second 2 is 2nd year, 62!) The parts that the ebay listing quotes are '66 and '68 designed parts. Keep looking.......:-(

440 Source.com - Info on Chrysler's casting and part numbering system