What car class corrections should be made come the next GTA?

Please note that GTA V Bullet is based on 2004-2006 Ford GT:
en.wikipedia.org/wiki/Ford_GT#First_generation_(2004%E2%80%932006)

The "more modern" Ford GT you are talking about, FMJ, is based on 2016 Ford GT:
en.wikipedia.org/wiki/Ford_GT#Second_generation_(2016%E2%80%93present)

The "classic" Ford GT40:
en.wikipedia.org/wiki/Ford_GT40
Which was inspiration for both 2004 (similar looking) and 2016 (not so much) can also be found in GTA Online, but mixed with Lamborghini Miura (it closer resembles Miura, but there is visible inspiration from GT40): Monroe.

Ah that explains it then.

I'd like to see a cross-class list of cars that you could put in Creator races. An 'as-intended' list of cars to use along side the rest of the regular classes.

I think the only real way to fix the class discrepancies is to put in actual bhp/top speed/handling stats and class them based on performance, but that'd be a rewrite. Or two.

Create a new Rally class and move the Pariah to supers

Maybe instead of having all motorbikes lumped together, there could be, for example, a superbikes class and a sports bikes class.

Add a Choppers class to the list, they need their own races as well.

As for my changes:

Hypercars (the really quick, prototype-like cars, like the X-80 Proto, Autarch)
Modern Supercars (your usual expensive, quick car, like the Zentorno, Tempesta, Adder)
Vintage Supercars (same as above, but for supercars from the 90's and older, like the GP1, Turismo Classic)
Modern Sports (like the Jester, Banshee)
Retro Sports (like the Elegy Retro, Sentinel Classic)
Modern Muscles (for all the modern muscle cars like the recent Dominator, Buffalo, Gauntlet)
Retro Muscles (for the old muscle cars like the Ellie, Sabre, Tampa, Dukes)
Collection (the cars you own because they're old and rare, like the Z-Type)
Supersbikes (the really quick bikes like the Hakuchou Drag, Bati 801RR)
Sports bikes (your usual street-fighter bike like the Ruffian)
Choppers (the bikes, not the helicopters, like the Nightblade)

Sedans class is fine, Coupes as well, but only if they actually put sedans and coupes in them (like the Exemplar which is a sedan and is in the coupes class), a rally class separate from the off-road class would be good as well.

The rest doesn't need much changes.

The trick would be for races to either be available for one specific class, or for a general class. For example, either racing in the Modern Supercars class, or to make the race available for Supercars in general so Vintage and Modern cars would be allowed to mix up and race together.