I've got plenty of 2.250 x .375 wall dom. I know thats a little big but it could be turned down pretty easy if you only need 6-8 inches. let me know if I can help.
If thats that's the case then I can take .125 off what I have and you'd be right at 2.125 x .250 wall. If you don't find it any where else let me know.
2.125 - .250 = 1.875 id. What you need
2.250 - .375 = 1.875 id. W/.250 wall thickness What I have.
if i take .125 off the od. of my 2.250 you'd have 2.125 with an id of 1.875
I dont see many guys with 2.125 laying around its kind of an odd size. Plus for sleeving you will almost need someone to turn it exact to what you need so it'll fit tight