Hoping you guys might be able to help me figure this out. My 10 bolt has the strange small "special chevy" 3.150 ends, P/N H1143. My axles are made by Moser. They are custom made to fit and keep my wheel base. They're quite a bit larger diameter than stock. No part number just ME AXLE SHAFT-RP "custom moser" 30 spline with 2" x 1/2" x 20 studs. The back spacing is 2.75. I've measured it several times. Axle flange is 6.125. Center registar is 2.77. My problem is I can't seem to find many options for the 2.75 offset. Moser P/N 6200-1275 looks like a fit, but doesn't specify if they make brackets for staggered shocks. Maybe doesn't matter? But it does specifically say it fits the 2.75 off set. Wilwood offers P/N 140-11400 kit. I called them and looks like it will fit despite some conflicting info from other sites that list this kit as being for a 2.81 off set. Wilwood shows it as fitting the 2.75 off set. It does specify for staggered shocks. Only offered with e brake option. And I'm not using e-brakes but obviously I could simply eliminate the shoes. Strange offers P/N B1718WC kit. Again doesn't specify for staggered or not. Big issues is it says for 2.83 off set. Finally it looks like if all else fails I could go with one of many "economy" kits. Just not the way I want to go really. Looks like the wilwood kit is probably the safest option for fitment. So suspect unless anyone has other suggestions I will probably order that one. Curious though, is the difference between 2.75 and 2.81 off sets truly an issue? If I could go with the 2.81 it opens a lot of other options for me.