depends how wide your axle is. I know Kyle's is 67" wms to wms with 4.25" of back spacing on the wheels. his don't rub. Mine on the other hand do and I'm only 1-1/2" narrower. I'd rather run the stock shock mounts and lower the mount on the axle by the tire than run either of the aftermarket options given by the OP, not bashing just giving my honest opinion. Flex looks cool, but axle control is where its at. The trick becomes getting a shock that isn't too long or too short with valving that your happy with. There is a huge faction of people that are saying you have to have 15" of wheel travel to have a rig that works, not so. Most leaf springs are only compressing and extending between 8-10" and if your shock is within that your usually good to go.
My personal custom coil set ups are only using 10" of shock and is just a trail plug that is usually at the top of the trail parked and waiting.
My personal custom coil set ups are only using 10" of shock and is just a trail plug that is usually at the top of the trail parked and waiting.