I guess you are talking about your 63, but on my 55 (three on the tree), I got a 3 speed trans with R10 out of a 57 BelAir. At least that's what the person that sold it to me said. I used the front part of my trans and put to R10 behind it. Same length, etc.

Last edited by VEW; 06/18/2018 7:24 PM.
~ Victor
1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery
1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD
1957 3100 - moved on
1959 C4500 Short Bus "Magic Bus" - moved on
1959 G3800 1 Ton Dually "Chief" - moved on
1958 C4400 Viking "Thor" ~ moved on to fellow Bolter