I bought a "project" Swinger 340 4 speed over the weekend. The motor is a 69 340 with X heads, but the I'm not sure what the 4 speed trans is. Casting numbers are C99129 and C13212-2 and numbers on the pad are PP8335298 and 6B198248. Can anyone decode that for me? Also there is a shifter on Ebay that shows part numbers of RE25561 and 29041M. Is that a correct Hurst shifter for a 69 bench 4 speed Swinger? Thanks a ton for any help. Dave