[b454rat]

It doesn't make a difference towing with a shackle flip. The shackle is still gonna see all the weight of the truck and whatever is in the bed or is being towed. Only difference is the position of it. You won't see a difference in side to side either. Not inless you use a 12" long shackle made out of sheet metal. If you are using the stock shackle, it will act and react the same as a regular setup. I have a shackle flip on my 89, though I don't tow with it, it drives no different than any other truck that I drove. Only thing that I notice driving is that I have no sway bars, so going around a corner the truck will lean. I've had it on some pretty steep hills sideways, never had any problems. If you read the description in ORD's site about the flip, it will tell you that there is no difference towing with this. And for the blocks, I'm not really a huge fan either, but when I lift my truck it will be getting some blocks. It's alot cheaper, and I think I will need to move the axle back anyways from the shackle flip, so I can get the offset centerpins. The truck rides good for being a 1 ton, and i don't want to change that. Rear springs are $500 for 63s. Going to make a simple ladder bar so i won't have any axle wrap. Look at the older Fords, they use a factory block for the rear. They have holes in them for the u-bolts to go thru, so no way for them to get spit out.