what is a K frame

To clarify, you will need the steel "engine brackets" that bolt to the engine (each side) and the rubber isolators that go between the mounts and K-frame. Many term both the brackets and isolators "motor mounts". Late engine brackets (73+?) use spool isolators that won't fit your K-frame. The 67-72 engine brackets might be identical to 62-66 ones.

Since going to a slant, you can keep the V-8 center-link. If rebuilding the steering, you could probably swap it for a slant one plus pay you almost $100 since many want yours.