Rallye wheel air valve length?

Can someone tell me the correct length of the rubber air valve on 15X7 rallye wheels? Also do they need an extension to clear the trim ring? Thank you.

I can't remember offhand what the stem length is, but they did use a 1/2 extension.

Thank you for the information. I just want to make sure when I mount my Goodyears to the wheel I use a long enough stem so the 1/2 inch extension will allow me to add air to the tires when needed without removing the trim rings.

Factory?
Just long enough to be a pain in the butt when you need to put an air chuck on them.

There are 4 or 5 sets listed on ebay under "mopar valve stem extensions"