Don't drink the Kool-Aide! If .007 is acceptable, .010 will be fine with that big of a bore and forged pistons. That difference in clearance isn't going to cause the rings to not seal properly, sure it may not be the absolute best possible but you'll never know the difference if you stop worrying about it. Not having any taper in the bore and setting the end gap on the rings where it needs to be will be the important things, probably .018-.019".

The only identification on the pistons is the forging number.. (or so I'm told) That number is "JE 314F" and is located on the bottom side of the piston..

Being that there is no engraving on the piston, this is suggesting the pistons are pre-2004 as that is when JE started the engraving program.. So not only are we dealing with a piston that fits a little loose in the bore, but its also getting on 7 or 8 years in age..

I dont know if the age means anything towards reliability, but I would hate to toast a motor because I got cheap..

Tried to do a little research for you but all I found is were the numbers should be. Sorry.
http://www.jepistons.com/TechCorner/HowToIdentify.aspx

I will probably get flamed by the you shouldn't do that Mopar crew, but year ago I had a good year going and developed a blow-by issue on an engine that should have been gone through over the past Winter. The funds were not there and I had some choices to make. Try to make another season or sit out the year. I chose to race and like I said had a good season going. When she started puffing smoke I quickly pulled the engine, ripped her down, and took some measurements. .011 clearance so I made some calls to some old time machinists and do you know what they recommended? A fresh hone job and buy some broken sets ( rings set back with missing or broken rings ) and rebuild it with cast rings. At that time all broken sets were set to California so I ordered 3 incomplete sets ( at a great price ) and I put it together. Cast rings only no moly ring. You won't believe how well the engine ran. After the season it became a backup engine that was put to use for years to come. Rant on if you want to but trust me it worked.

Too cool .............My pistons are around .007 this time around and I hear no loose pistons in my motor. Revs nicely and thats w/moly top napier 2nd(both back cut)and med oil rings...........You may coat em for peace of mind although that only lasts so long anyhow.