Sorry Jon, I don’t mean to confuse the issue. I thought you were saying you were going to order the same part number that you already have but with the A1 at the end instead of the Q1. I thought you meant the A1 designated the thread size.
The part number I ordered (B4-B30-U232A1 M48x1.5 OST) It did have to be cut down.
Every time I talked to the guys at Bilstein it was a real pain in the butt. I think they have so many different options, that they cant keep track of them.