Drive shaft help

a 4x4 shop can make one as they regularly run flanged yokes and splined driveshafts...but I think you need a 'standard' 66 spec as described., I run a later trans but I also run a 8.75 so mine is gonna measure shorter than what you need. IIRC a 72 Duster with a 7.25 comes to mind as a possible doner...any believers?