I have a tap you can have mate, like I said I bought one, tried it and didn't like it
Might seem more expensive getting the on/off asa but its worth it in my opinion
just for the face it looks a lot tidyer to me
You can't just buy a drop forward though without a bottom line (asa) as you will have nowhere to screw the air into.
No matter what you will need:
2x 1/4" 90 degree elbows
1/4" hosing
A reg of some sort (x-strem or similar)
Then either an eclipse bottom line mk2 and an on/off tap OR
A drop forward (has to be a long) and an on/off asa
Dave