Thanks for all the advice guys, I really do appreciate it!
Your 216 will easily do 65-70 with a 3:55 rear gear. I regularly do 60-65 with my 38 216 & 3:73 gear set. If you have a half ton you can get 3:55 gear sets from any of the vendors. If you have 3/4 ton or up you'll have to get inventive. BTW what part of the sunflower state do you live in?