[EclipseGST]

If you are rebuilding the block with aftermarket pistons, it would be pointless if you put in stock rods. If you are going to use stock rods, get a set of 2g pistons and go from there.

In my opinion... If you have the money to build the bottom end, do it. Do things once, do it right, and be done with it. Why have to upgrade later down the road and spend more money. Some things can be done this way, some cant. Like fuel for example, if you have DSMlink, why not buy 950cc injectors instead of 650's? The price difference isnt that much, you could be running a stock turbo and DSMlink would handle them just fine. There for you buy the larger injectors and save a couple hundred bucks instead of having to upgrade them later down the road. Think of how much it will cost to rebuild a stock motor, then when you get to the point where you want to make more power than the motor can handle, you have to build another motor. Your decision, just giving you an opinion.

What you are asking is a broad question... You are going to need a fuel setup, a FMIC of some sort, turbo, exhaust, if you get cams you should get valve springs, basically just all the important stuff to make it work with the rest of the engine. If you dont have all that, you dont really need to worry about what modifications you do to the engine.