Well folks, I did end up going with the Mastercrafts after all. So far I think thye're awesome, I've already tried them in the rain too, nice traction and handling both dry and wet conditions, and the ride is unbelievable. Like night and day from the crap Michelin Energy's it came with I'll tell you that.
Pittman, I'm with you with BFG, I almost went with them, I have those on my Mach 1, what a set of tires.
I had Coopers on my 73 and 77 GP's always like Coopers, and also US made. So, that was probably the biggest reason I went with them, let's hope they live up to their heritage.
I thank you very much for your replies on this, I got a lot of good replies for Mastercrafts and Coopers on the Mach 1 page also, so between the feedback, it also helped my decision.
Have a great Turkey Day everyone!