Buick GN specced th400.Billet oversize input shaft and forward drum ,billet main shaft,34 element sprag w/bushed direct drum and custom clutch hub,4140 steel billet sun gear shaft,CK EXCLUSIVE,Pro tree brake,fully rollerized at at all postive thrust surfaces,deep pan ,6 forward,6 direct,4 intermediate Hi Energy clutches,surface ground pump assembly with converter charge mods,snap ring stablizer,low drag rear servo dyno tested.good for 800 plus hp.Correct speedo gear ,filler tube and dipstick$1499.00 shipped continental USA.