I sent TK an email and he said it would be ok for me to produce up to 50. I would just need to mark them as my own so they are not confused with AGD product. If we were to make just the front half of the valve it would be most cost effective to use the stainless power tube tip from an x valve. making the reg half is probably a waste since several aftermarket companies made them from aluminum and they are cheap.
sounds like a cool project....If enough people are interested i will do a run this year.
I would take 2 or 3 off your hands depending on price.