Okay, here's some better info. Yes, the stock TB is 65MM. I just had my Mac CAI off (changed fuel injectors & MAF). I paid careful attention to how the CAI went back over the T/B. I believe the sleeve will fit over a 75MM T/B, HOWEVER, you may run out of slack in the clamp. I realized that I was down on the last few notches on the clamp and it just slid over the T/B & sleeve...
So, there you have it - looks like the sleeve will fit (with some persuasion, but the clamp MAY be a bit small).
Jay