Well I did it Friday Night... traded a 1965 Bird and got a 1960/61 Jazz Bass.....' Of course I went back the next day and got my T Bird back. Jazz was cool! I had the action SO LOW on it it was insane. But there was some question to the originality of the body (It was a refin) and it had been refretted with Gibson size frets......One big thing is that it did NOT have the output of a T bird through My 100 watt GK combo. I was VERY pleased to get my Thunderbird back.Nice experience to really try a vintage jazz. I'll stick with my '78/'81 dot neck/binding maple neck Jazz with SD 1/4 pounders.....