Yea , I get what your saying 100% Brian , alot of the "different " thing on the kart could have been done after the fact also . My buddy did it once on a Bicknell kart I use to have .I'll agree that it has some characteristics of some of Mike's karts, but I don't think that it is either.
That plate may have been added later, as well as moving the master cylinder bracket and lower steering column support being moved/changed to a single pick-up.
It looks a lot like one of our old Vector AO2 chassis with the dual heim front end as well, but it is not.
Sorry I can't help any more than the others here....it looks a lot like...
a lot like a lot of karts from that era.
Thanks and God bless,
Carlson Racing Engines
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32 years of service to the karting industry ~ 1Cor 9:24