There is nothing wrong with running a wider car, just be aware of how it will affect handling. Generally as track width increases, traction decreases for a given set-up. But you can use track width along with other changes to get the desired effect. Since you are running narrower wheels/tire similar to TC I would stick with 190 bodies if you could. But if you can only find the body you want in 200 get it and limit the amount you widen the car to fill the wheel wells. Or just fill them wheel wells on up, and tune the suspension around the wider car, just keep the same width with every set of wheels you buy.