Be patient, Dude!!
We don't all live on the computer all day!
Your bike is way cool, and don't smash it up!
I have 2 myself, and I don't know why that when you do a search in this forum to try and find other owners of the Sears Allstate, NONE come up!
Any way Yeah, I know of some of the best places.
Also, from the Netherlands there's 50cc,
and Rinky Toys. They've got it all, but they're overseas.
Ask Matt from Motor West, Inc. With the model# on that black and aluminum plate, tell him the 810. number. They know the years there.
My last 3 numbers are 010, and 000, the 010 is a '58, the 000 is a '54.
I love these bikes, they're worth a fortune restored. (well I've seen 'em go on eBay for 1000 to 3500 dollars! I bought both of mine for 100. The '58 is mostly there, but bad rings. The '54 ran for 4 years until just lately. It's rings went to. Not to worry, it's not a mechabnical flaw, Mine are just old.
Now getting a new piston with the rings has been a bit crappy! I ordered them from Motor West, but they're back ordered.
Hope this helps!
For the parts availability, and the absolute coolness of these bikes, it's worth keeping!!! Let me know how it comes along. I've had mine for awhile. They are my fave!
ps I left an attachment.