need driveshaft length...66 Valiant W/ 8.75

Mine was actually measured in place, although I would prefer it to be just a touch shorter. Mine is not a stock unit, it was made for me by a driveshaft company with dimensions taken by me according to their request. It fits and I have no problems, but it is a little tight to remove and install. The stock size mentioned above is pretty close to what I have, so I'm not changing is, but I just thought I'd throw some real time observations at y'all!!! Geof