[fourreGsixty3]

Nice post Don, I would say skip the 16g, and go straight to the BB 50 Trim, it spools just as quick as the 16g, but more flows more then the 16g, you will also have a much higher efficency range then with the 16g. As for injector sizes, you must give us more info. like what kind of boost you will be running, and what octane you will be using, also remember you will probably need a wally 255, so that means you need an AFPR, and some sort of tuning device along with a logger. My suggestion is DSMLink, and a logger, if you are going past 660s, or a S-AFC II and a logger if not, but more likely you will be going past 660s since you wont be able to utilize the 50 trim to its full potential. So if you have a DSMLink you can go anywhere from stock injectors to 950s, the larger the better because it will lower the IDC, and allow for more tuning room. Also a little side note cast internals will only last for so long, I would upgrade them because with a larger turbo pushing more boost the EGTs will go up and the cast internals will melt. Just my .02.

Dustin