Remember the 215 cubic inch Buick/Olds V8? It had a 3 1/2" bore size, the compression height is very close to right to use with a pressure-lubed stroker crankshaft in a 216 block, and a 60 over piston duplicates a 235 bore size with a MUCH lighter weight piston and can be used with an H-beam Nissan tool steel rod capable of handling 500+ HP. All in a package that looks like a 216 from the outside. Close to 260 cubic inches.
www.ebay.com/itm/264700871203?Jerry