I'm aware of both the Abacus, and FSDome Adam A500, and A700. Unfortunately, these are aircraft I'm going to be very particular about, since I helped build them. Also, none of them really represent any of the configurations of which they were built.
M309- Proof of Concept (Built by Scaled Composites- Burt Rutan)
A500- (SN 1) 1st Prototype
A500- (SN 2,3) Next prototypes
A500- (SN 4-9) Initial Type Certificate
A500- (SN 4,5,7,8,9) After Design Change 2 modifications
A500- (SN 10-12) Built as DC2
Once I get used to GMax, these will probably be one of my first projects, since I already know all the little intricacies of each variant, along with instrument panel variations.
A700- (SN 1) Prototype
A700- (SN 2) Added Belly Tank, Changed Emergency Exits
A700- (SN 3) Redesigned Belly Tank