For anyone who has swapped a 340 with manual transmission into a 66 Dart

I am using the 10.5 bell. OK, so the modification is on the bell side not the frame side. I'll get hold of Brewers tomorrow. Thanks!
No, it's everything. The '67 plate isn't made to fit an early-A, the part 66Dartdriver posted is the body ball-stud bracket assy., & You need an early-A Z-bar/rod. Early-A's are ~2.5" narrower front frame rail-to-rail, which makes it ~1.25" short on that side, hence the links posted above.