it will have some version of a roll bar, race seats or at least decent recarosNice interior.
Not much difference between good pro tourer and track car.
Biggest difference probably comfort level for occupants.
My pick would be to pull the plastic dash & go custom aluminum. Build vent dampers to pull air into cabin. Reasonably comfortable recaros with quick change custom race seat. removable sidebars on roll cage. Keep it Sunday drive compatible but track ready!!not quite but close.View attachment 36498
If I build a track car, I would not track the 350.My personal choice would be Pro Touring with a N/A Coyote, A/C and all the Creature Comforts.
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You already Track your 350R, no need for two track cars unless you are starting your own Team.