G-bass is to the right of my 5 string Grind.
Basically they were Peavey's attempt to score sales away from G&L's L-1000. No Modulus connection for the G/G-V basses. My mate Ronnie was still working for Peavey then, necks were under-sized at the factory then shipped to Bell & Carlson for a carbon wrap. They had Gotoh bridges and Gotoh copy tuning pegs. Single pickup was an earlier VFL design used on the 2nd gen Forum, with a Cirrus preamp minus the blend pot. G-V was a Cirrus with bolt on carbon wrapped neck.
B-Quad was the Bromberg bass. I sometimes see "bring back the B-Quad" posts on Peavey threads. Won't happen, the B-Quad is Bromberg's design and he's been quite happy having Carvin/Kiesel build them the last 15 years. B-Quads, 4 & 5 strings, did have Modulus necks. Complicated circuit on them too. Stereo/mono output, piezo/active VFL pickups. 2 band EQ for the VFLs, tone pot for the piezo. Bridge has piezo saddles, each saddle had it's own level trimpot and could be panned left or right in stereo mode.
Peavey put out loads of models, hitting almost every letter of the alphabet; often think they did too many models and that's one reason why they get passed over.