Piston ring question

[Wingedwheel]

I finally got off my ass and pulled the top end apart to replace the cam chain and get my valves done. My cylinders are within tolerance so no boring required but I'm having a bitch of a time finding stock rings where they don't want an arm and a leg for them. I found these http://www.ebay.com/itm/161344396432?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT but no MFG matching part # to check them with. Just looking for experience to chime in and give me an opinion... thanks

 

[scabber]

If you have a 70 to 73 motor they should fit. If you have 447 marked connecting rods they won't fit.

 

[Wingedwheel]

Thanks scabber, I have the 256 pistons and I figured they would be ok but I like to get other perspectives.

 

[5twins]

Be aware that 256 pistons won't fit on 447 rods, the piston pin diameters differ.

 

[Wingedwheel]

I understand that 5twins I just wanted a second set of eyes on those rings