I started with add-a-leafs and was not happy with them. Hence, the 4" springs form Tomken. And, the real fender trimming I did was to clean up damage from that time.

I am not a fan of blocks as they are unstable in off-camber/extreme articulation situations. That makes them dangerous to someone I really care about - ME.

I know people runs blocks in the rear on many vehicles. IMHO, they are unstable and not worth the risk of a shift under stress.

You could keep the stock coil springs and go with a 2" spacer up front. Then, you could spend the few bucks for the 4" rear springs.

You still need extended brake lines and a drop-transfer case.

I agree that a little rubbing isn't a big deal as long as it is not taking chunks out of the tire tread....

Go with the bigger leaf springs in the rear. It will save you time and money in the long run....