just take out the 6" spacer and get some bilstein 5100 struts and add a 2" level on top of that with an AAL. i even heard a 1.5" level will fit 37's. that's what im doing when i get my RC lift
You can tuck 37s with a 6" lift and a level. Most guys run the 6+3 so they can have some more flex off-road.