The early Dodge/Plymouth cars make a good basis for a neat Rod..... They were built with better frames and brakes than the more popular (and prettier) Fords of the same era.
The old 6 cylinder engines had long crankshafts and bearing problems when used in a performance way......
They did not have a lot of interchangeability so that hurts them also. Try to get the most complete car you can to start with.
I like looking at them........they make my Fords look oh so much better