Hey there, you Clueless bunch.
I've been driving both of your classic cars, Theo's "7-Litre BBQ", and krenkme's Ferrari 330 P4. These cars were driven in the pre-2.10 update territory, but I hope these descriptions are correct enough.
Theo's 7-Litre BBQ
This Dodge has a nice colour and a nice sound, and it doesn't drive that bad either. In the 'Ring, the car didn't show many signs of oversteer or understeer, which is good for a old '70's muscle car. Compared to the Outlaws's Dodge, this one is more safer to drive, but is slightly slower. It is a great car for those who want to have a proper old racer without any of the death defying oversteer. Nice and smooth, is how I describe this ride.
krenkme's Fezza
The first time I drove this, I said "Holy crap, this is a Chaparral 2J!". It is super quick compared to a stock 330, and it is also super light on its feet. Like any other old racer with this much hp, it is great when you respect it, and it is horrendous when you get it wrong. It also has a nice "whoosh" sound from the turbo when you shift it 'round the track, great touch there. When you push it well, it can corner on a dime, with only a few signs of oversteer on low speed corners. Just respect it, and you have yourself a great Ferrari. Get it wrong and you have yourself a very nice red coffin...