Support for old boat engines

Two years ago I bought an old Jaguar 25 the inboard was an ageing Volvo MB2a50s! yes I had never heard of it either. It was in such a bad state of repair that I had to work very hard to gather all the servicing information and spare parts to put it back into sound condition. Along the way I bought an the entire stock and good will of an engine reconditioning company! Yes I agree it was a bit radical but my background is in business start-up and development so it made a little more sense. I am fortunately experienced in internet marketing and now the old community of Volvo MB2a50s  is support via a web site providing long term support. The point of this story is that this has been such an immediate success due to connecting all the demand together that this business is now looking for other old engines where support services do not exist or are poor. So if any of you are aware of engines in need of long term support I would be willing to look into doing just that.