My project is a ’56 Plymouth with a Poly 318 and the original manual steering box that has the integrated, full length shaft…from steering wheel to box. My desire is to keep the original steering box, shorten the shaft, and install a Flaming River tilt column with ignition switch. I would also prefer to use either the stock ‘56 steering wheel, or one from a later model Mopar, so there will be a need to adapt either/or to the GM-splined Flaming River column. Since I will have to use the universal column, and I don’t have it in hand to experiment, I hope someone who might have already gone through the mix and match issues can give me some ideas about what to expect. One concern is the use of a double-D connection to join the box and the column. Since this would not be unique to my Mopar, I would be interested to hear how similar installations worked out on other brands. Were there problems with steering wheel alignment? Would it be better to spline the stock shaft?...or use the double-D on the stock shaft and a splined adapter to the column? The original wheel has a ¾”-40 spline, so I doubt Flaming River would be willing to re-spline their part to that odd-ball size, though they might do it to a later Mopar size.