if you dont maintain a rotary they tend to die early. you can run them hard all day long just keep a eye on the temp and oil press. if you drive "miss daisy" with them they will die from carbon build up on the rotors. you can turbo your if it has lower miles on it. just make sure that you get it enough fuel so it wont detonate. a guy on RX7Club.com turbo'd his NA with 80K and it lasted for a while and finally a faulty wastegate killed it. turbo cars are the ones that dont make it much over 100K.