According to Aircraft Spruce, the Barry Part No. for the Lyc. IO-360 used in an LNC2 is 94150-41.  This is what I have and they need replacement at 700 hrs and 8 years in service.  A/C Spruce wants about $420 per engine, while the 94150-40 is about $236. Apparently there are other choices such as Lord, VIP and perhaps other manufacturers, but am not real sure which are "equivalent".

The AerocraftParts catalog shows the following, but does not recommend which for which installation.  Notice that this lists both the 94150-41 and the 94150-40.

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Vibration Isolators
These are used on all standard Lancair dynafocal engine mounts and are the small (2-1/4") diameter type. Each configuration is best suited to a specific engine/prop combination which relates to firmness. Hardware needed: 4 AN7-35A bolts with 4 AN363-720 all metal stopnuts.

Part # Price Each
94150-01 $50.00
94150-40 $59.00
94150-41 $95.00
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Has anyone used something other than the Barry 94150-41 for this engine and what were your results?

Thanks,

Tom Thibault