Unfortunately I traded the turbo 400 for the SM465 that's now useless so I'm not sure. I'm gonna start mocking things up soon just for fun. Turns out that bellhousing doesn't seem like it's gonna work without an adaptor of some type.Measure the th400 from bellhousing face to trans mount location and compare it with the NV4500. If its the same you should be GTG crossmember wise.. Do the same thing from trans mount to tcase mounting flange on the back and compare those as well to see if the driveline matches up.
It would be pretty cool and make life easier for you if it's a match.
Is the T-case flange the same on both? Because the 208 off the th400 looks like it'll bolt right up. Haven't counted splines yet, guess I shouls probably do that.This is from memory so double check me but I think its just over 1 inch longer but the tip for pilot is also larger, its 3\4" vs GM that's just under 5\8 so if a 5\8 wrench goes over it its the GM.