rushforths on a 71 challenger

[doitbby]

i was just wondering if anyone had any input,comments, or suggestions on either 18" and 19 " rushforths vs. 19" and 20" wheels for a 71 challenger. i will be ordering them this week and any help would be greatly appreciated. the car has a magnum force front clip, qa1's on the corners and modified leafs in the rear. thanks in advance.
by the way, i met jason rushforth at good guys this weekend and was quite impressed. i have a great amount of respect for him and his integrity. not a salesman but a car enthusiast