Mike, I use the Pro Shocks SM600 for the rear. They are kind of spendy but they really improve the ride. They are very light valved and
oil filled. No adjustment. If you want to find an adjustable shock I can give you the dimensions of the SM600 for a reference. Most of the time the shocks are set for the lightest valving possible so the adjustable shock isn't really necessary. The coilovers would be a good option, they are very light valved and give a nice ride.
Don