Those frames built by Blackboard Hotrods look like quality frames (I checked out the link you included above). Have you set the '29 roadster body on it yet? How much of a gap is there between the floor of the "A" body and the top of the 32 rails? Is there enough of a gap that you will need to make a wood insert to fill the gap (as is needed when putting an "A" body on a stock Deuce frame? I'm going to follow this build. Was it scary to trim the roadsters cowl pillars for fitting the Hallock? Guess you had to modify the gas tank for the Hallock too.