6 boost manifold = $1,300 ish
Fullrace manifold = ALOT more, depending on exchange rates.
Twin 38 or 44 mm gates, $450 ish each.
Depening on how you set up boost control. 1x3 port MAC valves or as crazy as 2 X 4 port MAC valves = $120 - $360 depending on which way you want to go.
Braided lines (you'd have to have rocks in your head to run rubber). This ain't cheap. Well over $1,000 here in lines and fittings. Gets a bit out of hand when running lines to the top and bottom of the diaphragm with duel 4 port MAC valves.
Water and oil lines = Not quite sure. Haven't added that up.
IWG EFR would be a fair bit cheaper. No gates and not as much plumbing pain with the lines. No fab work with plumbing the gate pipes back in. That itself is an expansive exercise.