I have found this site to be very handy on trying to figure if the rim offset along with tire size will work on our cars. This site has it set up where you can pull up the 4 lug OEM specs and then compare it to the rim/tire your looking to put on your car. It will tell you have much faster/slower the speedometer will read, along with how many inches that -0 offset old skool rim your trying to put on will stick out.
Hope everyone else finds this just as handy as I have.

http://www.bigcustomwheels.com/rt_specs.jsp

enjoy,
-vern

 

Pretty sweet website!!!
You should repost this in the Suspension/Wheels/Tires/Brakes section...
and/or to the The Official FC Wheel Fitment Thread!
https://www.rx7club.com/suspension-wheels-tires-brakes-archive-112/official-fc-wheel-fitment-thread-467447/

 

I've posted that link a couple of times. Great site to play with for different wheel and tire combos. Not only will it show fitment, it also shows diameters and revolutions/mile to keep the speedo accurate.