I want more Hp for my 318

I think that you might be running too much carb.
I am running a holley 4160 600 cfm carb, comp XE 256 hyd. cam, flat top pistons .060 in the hole, .028 head gasket, magnum heads with stock 1.6 rockers and beehive springs, magnum air gap dual plane intake and hooker comp headers and it pulls hard. Everyone that has seen and heard the car says "Wow! that's a 318". According to comp cams it should make 320 hp and 380 tq. Not to shabby for a crappy old 318.
What heads are you running on it? What pistons? Compression ratio? I would try and figure these things out before you buy any parts, because too much cam and carb will make it a dog.