I got a request the other day to help evaluate a catamaran buy in SoCal. It turns out it was one of the bootleg Sunchaser 58s that John Shaw splashed and sped off with.
Funny thing; when they went through USCG certification, MSC was calling me with questions. One question was how was it possible that a 58 could weight 50,000 lbs I think it was. The other was it had the lowest laminate testing numbers they had seen.
Get one done right by a reputable builder, with designer support.