I have been running solid on the driver side and rubber on the passenger with the
Poly spool trans mount on every car I've owned. Mostly to keep the clutch linkage consistent and avoid ripped in two stockers.
No chain or strap needed with a driver side steel mount.
Some engines will vibrate with the steel mount worse than others. Had a E-body that would shake the screws out of the dash like a camero till I glued them all in with weatherstrip adhesive. Mirrors were a useless blur.
The a body's are built better in my opinion and I never had anywhere near as much problems with them shaking apart. Less plastic I would guess.
