C & B Class Indy Oval Top Cars

I sincerely apologize if I ruin everyone’s fun but I’m curious and cannot find an answer. In Rivals mode on the Indy Oval in both C and B class the top times are all the Nissan R35 GT-R. The only Nissan I can find that matches that description is the Black Edition GTR. The bottom class for this car is A. I can’t even manually remove stuff enough to de-class it down to B. How are people getting that car into those classes? Or is there another R35 GT-R that was only given to beta-testers or something?

Thank you in advance.

You can declass it by engine swap and drivetrain swap, you can get it easily to c-class with a pretty high topspeed

Thank you for the information. Do you know why you cannot search for a C or B class tune? Do you know any tunes you can find by creator? I know nothing about tuning a car.

yes. put the chevy small block in it and make it rwd. it goes to c class. it’s a high speed nimble car, but acceleration is what you have to sacrifice.

Forza has never had an easy search feature for detuned cars. You basically have to search through every GTR tune or filter it by oval and hope they are saved to that filter. Dunno if you’ll find anything good.

A week or maybe two ago I searched for b or c-class gtr tunes but I couldnt find any, but maybe I didnt search for it the right, but maybe you should try IRT swerve’s method

Sometimes you can lower the class (when all other upgrades have been downgraded) by using drag tires and heavy rims.

Havent tried it in fm5 yet, but in previous forzas you could lower the PI with wings as well

Thank you all for the information.