B20b type r head?

Ok hey guys whats up i have a 92 civic eg with a b20b it has a few mods i was wanting to do a head swap. What would be the best bet i dont have a ton of money. I was told the gsr doesnt have good flow. I was considering the type r. b18. what would i need and around about how much would this cost me
Thanks guys!
Thanks guys!