For a six pack you cant lose out there.
I had one many years back owned it for 12mths or so , it went well and I didnt have any probs with it.
I didnt race it ,just a bush bike.
I Have only seen a couple over the years at VMX meetings.
They came out in 82 and 83 after the XT500 81 models, the XT550 had the dry sump oil in frame like the TT,XT500 models.
They came out with 38mm forks, but would work better with a set of 43mm yamaha DLS front end or disc front end.
The standard tank is a large steel unit, you may be able to find something a bit smaller and racer looking
Also they have the twin carb sort of thing happening but like I said didnt play up on me.
I should of keep it
I cant see parts a prob.