I listened to the recording on YouTube (see the link above, in Genie's message) and I find that the words he sings exactly match what Genie posted (except for a few insignificant words like "well" and "yeah").

And I believe he sings "Jake."

I have not heard the studio recording.

By the way, Spotify has several recordings of this song by other artists, but it doesn't have the one recorded by Hoyt Axton.

It even has a German version called "Della und der Dealer" and (I think) a Czech version called "Della" sung by Karel Gott.