My 2-cents, specific is better than general. Rennlist is the clear traffic / content winner when looking for 993 content. I subscribe to both platforms/forums, but the logic that they "share" parts/features is irrelevant to a 993 or a 964 owner (who is the target audience) for the content. Forcing the reader to filter is a bigger negative than the benefit of some overlap, as overlap is not obvious to the uninformed or casual reader, so they will tune it out at the start if not their model/series.
Also, these forums are starting to lose content to FB and Instagram groups, first the visuals and for sale, now the technical is starting to seep in and groups are model specific. Adapt or become less relevant.
