I don't have a dog in this fight. I'm pretty much a Ford man. But I have run damper development tests on a dynamometer. If the 12PN advertiser modified a 292 damper it could be so overkill in the RPM range that 235s normally operate in that it will work fine. If the cost is less than an engine-specific more pricey damper for the 235 I call that "value engineering".
