I don’t know much about turbochargers. I would like to turbocharger my 1985 GSL RX-7 but don’t know what to get and where to get it.
I have put a 1990 turbo 13b engine in RX and I am running a street port racing beat Holley 600 cfm carb so what turbo kit should I get

 

Depends on your budget, power goals, use for the car. If you buy an off-the shelf "kit", it will not fit properly and you will still need some fabrication, plus you will be paying a lot more than you should for a turbo. Your best bet would be to have a proper manifold built for it, choose your turbo for your power goals/budget, and have a downpipe fabricated to line everything up properly.

Are you going blow through?

 

Read a book on Turbos; easiest, cheapest and most effective start.

 

Than again... you could read my thread also

https://www.rx7club.com/1st-generation-specific-1979-1985-18/12a-cartech-drawthrough-help-814461/