with those handlebar clamps and the chrome wheels its was an earlier version, Bird called them "spoker"
and they were also sold through sears as the I think first version "fielder"
Dbowl, I got a thunderbird in a parts buy awhile back and threw a little briggs like that on it to just sell for $100 it did Go, but it didn't like it!!!!! :laugh: I like the deck seat too :thumbsup: