Do have a picture of this type of driveshaft/joint? I'm having trouble picturing it. Do you make these? Ballpark figures, how much?
I don't have any actual problem with using a coupler - I would prefer to use a common size u-joint and driveshaft setup so I can run different engines in thee car. The current engine, a 1950 Buick 320 straight 8 is so long that it almost requires the use of a coupler, but with the smaller GM 7.5 rear, (currently Ford 9") and relocating the rear end a few inches aft, I could probably find 3-4 more inches. I would rather install a u joint flange on the rear instead of a coupler so I don't have to change it when switching engines, Get it set up once and forget it.
Jeff