I have that tube you can have if those measurements work for you. Only difference in one I have is that it shows about 3 1/2" of threads instead of 4", but the overall tube length is 9 1/4" and from the race to the top is around 7 1/2". I did an OP Roller build which takes an even longer tube. This is the tube I had to use . BICYCLE SPRINGER FORK STEERING TUBE 8-1/2" CHROME NEW! - eBay (item 390295853448 end time Jul-06-11 17:23:19 PDT)
So I have the extra tube that I had to replace and you are welcome to have it for nothin if you want to PM me your address. I would be happy to drop it in the mail to you and since I live here in Illinois as well....it shouldn't take you long to get it. Let me know.