You can usually find 80 over stovebolt pistons on Ebay, and the online sellers like Rock Auto, and other similar outfits either have them, or they can be drop shipped from the manufacturer after they lie to you about what they have in stock. The Silv-O-Lite part number for a 235 piston is 1413. Type Silv-O-Lite 1413-80 into your browser, and I believe you'll find multiple references to different companies who claim to have them in stock.

Here's what a 30 second search a couple of minutes ago found- - - -one of several hits:

www.ebay.com/itm/254832990346

Piston rings, gaskets, valves, bearings, and similar rebuilding parts can be found the same way. I haven't bought a "kit" for any engine I've built in many years. Find the applicable part number and do a search, or do business with a professional parts supplier.

Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!