Looks like it won’t be an issue, but if something changes I’ll gladly take those off your hands. Ironic how difficult it is to buy these fittings in the US unless paying $15/per.I have new Voss fittings, but with the locking collars (the push to lock piece) removed. All you’d need to do is carefully secure them (squeeze) a quarter inch down the air lines before screwing them down. I still have the plastic push pins so could try reinstalling the collars as well. Either way, lmk if you want to try them. PM me and I’ll send them to you FoC.
Edit: just looked at my bag of air suspension goodies; only have two new fittings and six used; a ton of collars as well; the o-rings on the old fittings look good as I never had an actual leak