I have not actually seen Dominick's B-17 yet...but he's told me a lot about it on several occasions. He says that there will be a tank for each engine.

I was at first thinking of perhaps a small (2 oz.? ) header tank mounted on the firewall...but I guess there's not enough room?

The V-30 / Saito installation I was thinking of was a 1.50 in a Funtana S90 and the guy (sorry, can't remember his handle ) said it worked wonders for reliability and he got more power as well, because he could then run it w/o a muffler.