If I am not mistaken, the rule regarding quality sliders applies to each individual model, trim and engine variant slider, doesn’t it?
Also, are there any PU/ET limits for the engine? And which configurations, if any, are prohibited from use in this series? On top of that, I’m expecting unleaded fuel and three-way catalytic converters to be mandatory, along with a reasonable loudness limit.
Yeah the rule for quality sliders applies throughout the whole car, engine, chassis, trim, body quality etc.
ET is taken from the whole car on the end screen. It does some maths which usually takes the higher of the trim or engine ET, but if these are super close then it tends to be slight above. So you cannot excede ET for the engine or the trim.
Configurations are all legal. The cost limit and ET limit means chosing the best is of big importance, as well as what the markets and airfield lap time prefer.
We are leaving fuel open - some fuel types get a penalty in the markets, some don’t. It is up to you if you want to run better or worse fuel.
And since it is race cars in the 80s, we haven’t mandated catalytic converters for this round, and for loudness, we usually let the markets decide influence if the cars should have mufflers or not.
Hope this answers all your questions!