Just thought I would throw this in. I have used oversize rings with standard pistons. One of the tricks that race engine builders use is a loose fitting piston. Won't bind as easily from heat expansion. Take for instance a stock engine that is worn evenly and the cylinders are smooth. The rings that you take out may have as much as .125 ring gap. If your hone the cylinders and use a standard size ring, your ring gap on new rings may be .030, which is way too much since most manuals will state .010 (on about a 4 inch bore) so if you get .010 oversize rings and (the trick is) to custom file each ring for the cylinder it will be used in and fit the ring to the bottom of the bore where there is the least amount of wear. I have done this a number of times with good results. The 305 small block in my '64 has been built with this method.
The question is, can you get them for a 216? I don't know. Probably. No problem getting them for a 305 or a 350. Talking to the right parts man at the right buisness will get you parts that others say you can't.
Truck Tinker
