I have a an 85 blazer with stock suspension and 32" sportkings. I don't do any serious rock climbing, mostly mud and back pasture trails to get to those great hunting spots. I was wondering if traction bars would do much for me, or if they would just be a waste of money. If they would give me a decent amount of extra traction, how much would they limit flex? and what would be a good brand to try? 85 k5 blazer with an old 305....must have more power!