No it's not. GT3 and GTLM are completely different classes. GTLM was formerly GT2. No GT3 spec car is eligible for GTLM, GT Pro or GT Am (as the class is known as in the ELMS/WEC). FIA GT3 has never, in its existence, been equivalent to GT2, GT Pro/Am/LM
GTD more of a GT4 class or American GT3.
Not quite. GT4 is much more production based than GTD (formerly Grand Am GT). GA GT featured cars which were far removed from their production counterparts, some not even production based
at all, the same for GTD. GTD would be more equivalent to the ELMS GTC class, although obviously not quite the same regulations-wise; the main similarities being both classes feature cars originally built to FIA GT3 specification.
You need to read up a bit more on GT racing, Zuel. I've seen you posting a lot of misinformation throughout GTPlanet, it's great that you're trying to help others but it will only lead to confusion on their part. And while others have tried to correct you in the past, you still keep it up. Your enthusiasm for racing is fantastic but your knowledge doesn't quite go the same length.
SO...just to cover all basis...
GT1 = dead
GT2 = dead
FIA GT3 = GTLM (USR) = GTE (LeMans)
am i correct there?...
GT1 = Dead
GT2 = GTLM/GT Pro/Am
GT3 = GA GT/GTD*
*Basically but, as previously stated, the cars have been modified to be competitive with the non-GT3 based cars in the class (eg. Mazda 6, Chevrolet Camaro, Porsche 911 GT America).
so my assumptions...is that the FIA GT3 cars that (may) enter GTD as part of USR...will likely have less aggressive aero packages, and probably some power restrictions to slow them down??
Correct. 👍
Now with the Vipers...seemingly the two cars are VERY similar...the GT3-R just being the customer version? I then also will assume that a Viper GT3-R entered in the actual FIA GT3 championships...would be much faster around the track...then one entered in USR GTD???
While they look very similar on the outside, they are both built to different specifications. I'm not sure on the exact differences between both cars though. The GT3-R is built for customers, correct, and yes, a GT3-R racing in, say, the Blancpain Endurance Championship (an endurance championship for FIA GT3 spec cars) would be quite a bit faster than one racing in the GTD class.
Also, sorry for further dragging this thread off-topic.
