[TurboKraft]

Fittings for the freq valve:
If these are so hard to get, we can make some injector holders in billet aluminum IF there is enough interest -- 20-30 pieces. Then you could use any standard length Bosch-style injector (you pick the flow, quality, price point). Fittings would probably be -4AN, though can make to accept metric threads like an M10x1.0mm or M12x1.5mm hollow bolt.