These are very reasonably priced and I have ordered from this seller with no issues but I'm not affiliated with them in any way. I'd offer up $40 and see if they bite.
http://www.ebay.com/itm/181332904588?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
Update:
I found a source for the metal valve stems that work with the OEM sensors. You can do a search and see if there is a retailer where you live.
Silver dill vs-925a
Black dill vs-925b
Chrome dill vs-925c
I use the silver ones on my track wheels and had them on my SVT wheels I just sold. A friend of mine just ordered the black ones for his track wheels.
Black
http://www.vampa.net/product_p/dill-vs-925b.htm
Silver
http://www.vampa.net/product_p/dill-vs-925a.htm
PDF
http://www.dillvalves.com/files/Dill_TPMS_VS-925_Valves.pdf
http://www.ebay.com/itm/181332904588?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
Update:
I found a source for the metal valve stems that work with the OEM sensors. You can do a search and see if there is a retailer where you live.
Silver dill vs-925a
Black dill vs-925b
Chrome dill vs-925c
I use the silver ones on my track wheels and had them on my SVT wheels I just sold. A friend of mine just ordered the black ones for his track wheels.
Black
http://www.vampa.net/product_p/dill-vs-925b.htm
Silver
http://www.vampa.net/product_p/dill-vs-925a.htm
http://www.dillvalves.com/files/Dill_TPMS_VS-925_Valves.pdf
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