How to tell

I went to check out a 84 rx7 today i was hopeing to see the gsl se tag but did not. was kind of bummed but when i asked the guys if it was a 12a or a 13b he said 13b was wondering what i can check out to see if we was telling the truth or not PS the one that i checked out was a SE model

Anyone know of any good Roto shops around pittsburgh?

Best way i find it to check the irons.

They will have 13B raised right on the tip portions. I beleave it also says what came in teh car from factor on the door sill.

Thanks a ton guy really appriciate it

No prob. If its a GSL-SE it has a 13B which means there is a fuel injection syste, So there wont be a big air filter ontop of the motor. Pretty easy to tell the diff. :P

Well i know that it has a GS badge on it but the guys said it was a 13B, so if it is a 13b would it have to have been a swap job? Also is there a 4 port and a 6 port 13B or just a 6 Port?