The only thing I didn't like about the heidt's kit was that the upper links are mounted on the outside of the frame rails. It may be ok for some but if I am going to go through all the work to do that I am going to mini tub too and it wouldn't be worth it with that kit. In my opinion if you are going to use stock frame rails the prodigy bar is the way to go. The g-bar or air bar is nice also but the prodigy bar has more adjustment.
Heidits isn't in the same league as these guys. I've read that the hedits give a loose feeling ride. Excessive body roll, mig welded joints ect.
Hedits caters more to the Mustang crowd.
This is one area you shouldn't scrimp. Buy the best parts you can and look to save money else where.