I currently own two FC3S RX7s. Both are NA but one is being converted into an autocross / track day car with a 13B Turbo II swap. I have been competing in autocross for 3 years and have modified the first car alot. I really enjoy driving the RX7 and look forward to the Turbo II when it is completed.

 

Forgot to mention that I have the 5th and 6th port inserts from Pineapple racing and what a nice bump in power at the upper range. Worth every dollar. Also went to a custom made 5.12 ring and pinion for better acceleration. It helps alot but was pretty expensive. Total cost approaching $1200. It really kills gas mileage. I will probably stay with the 4.30 for my S5 Turbo II project.