91 EZGO 3pg - Just Top End Rebuild Needed?

[PD4]

I have my 91 ezgo 3pg engine out, and the piston is shot. I purchased the cart a year ago and it ran great for awhile, then started giving me trouble. When I finally pulled the motor, I noticed there was no head gasket at all, which likely led to the broken ring and damaged piston. Also have a little bit of damage at the top of the cylinder. I'm wondering (hoping) all I need is a top end rebuild. I've attached some pictures. This is my first time posting and first time working on this engine, so I'm a bit clueless, though I've gleaned enough from this forum to actually get the engine out and take a look. What exactly should I look for to determine if the bottom end is okay? I'm also in need of a new reed cage, but I hear they are ridiculously hard to find. I ordered the smaller banshee reed cage someone else on this forum had rigged and will see what I can do with that. But if anyone has an OEM, that'd be ideal. Thanks in advance for the help!