I have two of them, brand new in box, never installed. I am not using them in my RV-7 build, decided on IO-360 which does not require gascolators.
One is GAS375 purchased from Van's, one is GAS375-M-R, Reverse Style Gascolator-Male, purchased direct from Andair in the UK.
Also have 2 ea Andair MF20 AN-6 Male Fittings, and 2ea Andair FF20 1/4 NPT Female Fittings, to allow various options in final installation.
Invoices for all from Van's/Andair total $415. Will sell all for $375 free shipping included.