This day in age, you can super charge or turbo anything. With a B18A you'd be better off turboing cuz you don't have the VTEC. Internal wise you want to upgrade your valve train, new pistons, rods, and balance out your crankshaft. With your pistons if you get 9:1 compression pistons, port and polish, port match and do all new valve train, you could easily run about 15 PSI on a turbo, give or take a little. But that also depends on your fuel system as well. You could run 7-9 psi on stock motors, any more boost and you need to upgrade. Fuel system includes 330cc or 410cc or whatever you prefer injectors, a fuel rail, a fuel pressure regulator and a fuel pump. Internals are already listed.
Basically I've seen some GSR motors run 25 PSI on a turbo. But those engines were fully built.