[jordan_myers]

I agree with drumming, if your going to do both, then do them at once. If you need the car to drive then of course the breathing since they basically bolt ons. If your pulling the engine the I would rebuild the engine first starting with the the lower block internal (pistons, rods, rings, etc.). You should have decided what your goal hp is then you can determine what internals to use. I helped a friend rebuild my B18a and we used all oem lower block internals since the have been proven to hold up to 300hp and I am only planning on 250 to 300hp (I have close to 200 whp now) and I am doing an all engine build. After you finish your lower block then I would work my way up to the head and valve train (p&p, cams, valve springs, valves, cam gears, timing chain). Then lastly I would work on my fuel delivery and air intake/exhaust (injectors, intake manifold, cai, header, exhaust). After your engine is finished I would then move on to the tranny, as this is just as important in my opinion. This is just my opinion and what I have personally done, everyone is different and have different expectations, so the first thing you should do is sit down and determine your build, set up your plans, setup your budget, and read, read, read. I'm not sure about your experience but its is always key to gain as much knowledge as possible before diving into a project.