Nice build and write up.
I'll stick with my whipple since I always have the power readily available and the way I drive, I'd be filling the bottle way too much.
I was running 285s up front and 305 G2s and this year since I bought more rims, I'll be running 275s in front and 305s riis in the rear. To me, the 285s looked too big in the front.
Same here, I didn't run them on my boosted 13, 14 and now my 19. I bought them and planned to install them until I rad some were having issues with tolerances with the gears and pump housing so I sold my gears after I installed my whipple.