Hey Jeff, saw your add on CL and was tempted to try to find a way to pick them up and eventually build a sprint-6 again... but lack of space, time and money... you know the story...
Anyway, I'm in the area and have a lot of contacts through the Western Washington Firebird club... I can check around for you if you like, and or if you need reference, you can check out my 67 or my neighbors 68 any time or I can always get you together with a few of the local bird owners...
I'll send out an email on the WWF list and see if anyone has something for a resonable price that is complete.