Can anyone identify this carb?

[Sycamore]

Can anyone identify this carb model? It's running on an early 80's SR500 but I don't think it's the stock carb - I suspect it's off an old XT or TT500 maybe?

Thanks

 

[RobCrouch]

 

[Oubones]

 

[Tommy Transalp]

 

[subie]

 

[RobCrouch]

 

[Dux]

 

[Welsh]

 

[superfoxi]

 

[Sycamore]

 

[superfoxi]

 

[Welsh]

 

[sidetrack]

 

[JIMMI]

 

[jhbdog]

 

[Samou]

 

[Chrisl]

 

[Blikkies1]

 

[DR BIG 750]

 

[Dux]