Questions

1) a slant six trans will not bolt to a small block. The torque converter may bolt up, but it will not be balanced for the 360, and may not be able to work well on a small block application.

2) You should check any aftermarket suspension place for the plates. I do not think the 7 1/4 plates will work, and they should NOT be modified to work, as this could be a safety hazard.