SLANT SIX BELL HOUSING IDENTIFACTION

[troy.70R/T]

I have an aluminum slant six bell housing the bearing retainer hole is 4.354  The only casting number on is is is very hard to read. All I can make out ar the first two numbers they are 26?? I was pretty I took this off of a truck motor years ago but I can't remember. I was going to give the bell housing and flywheel to a friend of mine for his duster but am not sure if there was a difference between car and truck bell housing. I just don't want him to have have a bunch of problems with his conversion if they can be avoided. any help is appreciated. Troy