I'm getting a low miles B20 and i want to addafew horses before the install.I was planning on porting the head and adding headers and intake and a few bolt ons like that.Im not looking for huge power but I dont know if i should port the stock intake manifold or go after market?Also should I get bigger injectors/ high flow fuel pump etc.? Im new at this and I dont want to bore out the block or valves just cause I'm on a tight budget and Im afraid if i tear the engine down myself it would stay that way.Also should I change cams and if so to what?I dont know sh about cams or compression.Any help is appreciated!