My home inspection of Speedmaster heads

PBR,
I'm really considering doing an all out porting job on these myself, safe to say I'm not using all this stuff on a 4x4 318 beater........um, I do have another vehicle though!:lol: I'd definately be sticking to sound theories and what works on the SB head layout, tubing is something I am a little apprehensive about but am reading up on, watching some videos. I'm game! Thanks!