What is the Tampa in gta4 supposed to be?

What is the Tampa in gta4 supposed to be?
The Tampa in GTA San Andreas resembles a 1965-1969 Chevrolet Corvair, except it isn't rear-engined and it has a grille. It has plain steel wheels, and mismatched paint on multiple body panels, indicating it was put together with spare parts from a junkyard. It also appears to be over-scaled and in comparison to some under-scaled cars, as it looks much larger than an old compact. The Tampa is one of the gang cars used by the Da Nang Boys, a gang based in San Fierro.