Not all configurations. I have all the necessary components. Too many variables to have them all built at the ready. It would equate to having too much inventory around.
Turn around times will be quick for the stage 1 stuff. But for anything that is more in depth such as the stage two, three or a competition engine (which requires balancing and / or custom parts tailored to the individuals exact engine needs) may take longer.
And if you want a different combos than what is listed in the website then I can price anything in any config the buyer would want.