[555_Si]

i'd go with top mount, much easier to install, no chasing boost leaks.

18g might be a bit much for a wrx lump, vf35 should hit 320 to 335 ish.

i'd go with a green panel filter personally.

got a set of pinks here and a nearly new walbro.

sti up pipe or a harvy up pipe, use standard or ported headers.

might be worth going 3 port boost solenoid if you get a chance before mapping. not essential but maybe a bit better at controlling boost. make sure you when you change turbo you have the restrictor pill in the boost control pipe still.

i actually changed the inlet manifold injectors as easier and this allowed to delete tumbler valves as well.

can sell inlet, pinks etc all together if you are interested.