Bill, both Team Warlock (Tom Stolarz) and Ultimate Warlock (Carter Reed) which then legally became Warlock after they settled with Johnny West of Ultra are no longer in business. Carter's number was dusted in 2009 and Carter does not matter in your context as he knows nothing about the Team Warlock 23 Offshore hulls other than they beat the piss out of bigger boats. Both of these guys however, are still out and about in SoCal.
Arko does not have any "dealers" so not following you there. They are mostly a direct to boat manufacturer high end shop. They are more on the vintage side, old codgers with 40 years of experience and connections along with a backlog, whereas Sturgis is more on the latest technology and technique side with space age stuff and a backlog. All four are living peeps and can be found It always depends on what you're after.
1972 16 OB - C16B-63 - "Surface Tension" Resto Project
1974 16 OB - DMR16106017-B - "The Mule"