that would be pretty low...
for the rear
you will have to notch the frame for the axle.. like a car with air ride. Also would need to cut out the trunk floor for the upper contol arm mounts (mine already hits) full tubs will be must. Other things to look at would be the trunk hinge boxes and the actual 1/4 panel clearance with a 28" tall tire tucked way up there
im not sure what you would have to do in the front 3 more inches there you wont have much susp travel not to mention the frame. the inner part of the front finders would have to be cut out.