If you could be a bit more specific it would help.
Which event do you want a recommendation for?
Do you want recommendations for a car you can win lots of races in or lots of recommendations so you can enter individual races in different cars?
To find out if a car is NA or Turbo, go to your garage. In the column on the right which shows "Driven" hit the arrow next to it. One of the sorting options is "NA/Turbo" select it, and it'll list your cars grouping all the NA cars together, Turbo cars together and Supercharged cars together.
I'll refer you back to the stock car thread I mentioned in my answer to your request for Beginner Event recommendations,
here, there's plenty of suggestions for all the professional events in there too.
And before you create another thread for extreme hall, regional halls etc, etc, scroll down further in the list & you'll find answers for everything, all in the same post!
