hey a 23 dodge is a cool unit
in regards to your frame, i am in the process of building a frame from scratch for a t . the hemi motor is pretty heavy even one of the old mini hemis i am putting in a olds 455
i would use your t bucket blue prints for a ball park guide and build from there and look at your old frame mounts and old frame design etc but what are they telling you to use for frame rail size in the blue prints. i am using 1.25 wall 2x 4 and was even going to use 3/16 wall to be safe . no fun to have a sagged frame