Help with decoding frame and engine numbers?

[Threes company]

Could anyone tell me how to decode these numbers? Is there a website that supplies this info or possibly a book? Thanks guys, I have a mystery motor on my hands. :confused:

[fatfords]

There is a lot of info on the homepage here. Check this out.
http://www.3wheelerworld.com/spexhome.shtml

Good Luck!

[Threes company]

Hey, thanks fatfords... guess i should of known the info would be somewhere on this site. Take care!! :beer