Motor mounts: how to replace biscuits

Urethane is harsh. If it were a stock build I'd try the rubber again. I think it has its place in some suspension applications but for a stock motor mount, give the $2 rubber insert a try or splurge for the $7 complete assembly. Westar is Korean and looks like a solid rubber while the Anchor is an OEM open design but may have more certs in manufacturing data.
1974 DODGE DART 3.7L 225cid L6 Motor Mount | RockAuto