billy t.
+1y
no blocks. Ought to be plenty low without blocks.
Stock u-bolts are squared off and run perpendicular to the spring (across it). To do the flip, you need to run the actual U shaped u-bolts so that they will go around the axle running parallel with the spring(beside it). Even if you could figure out a way to use the stock square u-bolts, by the time you take out the helper and the overload, the bolts will be too long and not threaded far enough. That said, if you ran a huge notch, you could just keep the helper and overload in there... bolts would be the right length, at least. You could make a plate that mounted on the stock perches and run the stock bolts under the spring but it wouldn't allow you to either set the pinion angle right or have the plate be flush on the perch. You could put shims in there though... hmmmmm...
I's suppose that the u-bolts between the squarebody and the OBS might be different. Maybe we can just use stock squarebody u-bolts to do this... I've never seen them, though, so who knows.