Transmission mount for a drag car.

This maybe a dumb question but does a spool mount work on a 70 a body, mine has a biscuit type & I don't see how it would work
A spool mount k-frame would be needed if you're talking about spool type engine mounts. I think that started in 73.
I just checked my 73 Dart Sport transmission mount. It does look like a spool type mount.