I'd say just use original figures then but holey moley guacamole Prime figures are getting expensive if you're not a veteran collector who already has them!! I have a signed MOSC 1st edition Arcee by Sumalee. That's probably floating in the realm of $200 now...
Gargantis kinda looks like his vehicle tho. Idk however, never watched Beetleborgs. That suit is awesome looking however.
Insert obligatory "why they not make this?" comment. But this can be a good figure with the right paint, it's just unfortunate that it makes a poor Arcee.