May need advice on 727 build

The Breather Is just Located Behind The Main Bellhousing , not the extension housing Which we call the Tailshaft Cast Join Have went back and Changed Back to The Bevel retainer in the Rear Drum and now got 80th Clearence Which maybe a bit much??? Might Check to see if I got a Thicker Pressure Plate
The trans will be street strip, running an EDGE 3500 STALL CONVERTOR engine 360 , 3.9 gears