Solid handling improvement
I can confirm that if you have a Fumoto valve it will need to be removed and you will need to raise the engine about 1/4 of an inch to get clearance for the new sway bar. It really wasn't as bad as I thought it might be. Just loosen two of the engine mount bolts put a floor jack under the oil pan with a block of wood and raise it just a little bit. Definite improvement in handling. I had neutral steering with just the 21mm rear bar so this does introduce a little bit of understeer. The understeer can be overcome with a bit of throttle. I may end up putting in a bigger, adjustable bar in the rear.