Okay, I did a few searchs, but didn't really come up with something useful. I'm going to run a 700R4 with a NP203/205 doubler. I already have the 203 adapter, and when I get a 700R4, I'll more than likely be getting the 208 adapter as well. I have read that I can use the 203 adapter in conjunction with a spacer, but haven't read anything about it's strength or anything specific. I can also run the 203 adapter if I swap out the output shaft in the 700 with one from AA, but at $160 it doesn't seem like a logic option. Then, the option that I really like since it sounds to be the strongest available, is to redrill and tap the np208 adapter to fit between the 700R4/NP203 combo. I'd really like to do this, but haven't found any details on what & where to actually tap/drill. Anyone have any suggestions on which option to run? Or have any info or links to tapping/drilling a 208 adapter? I've heard it's a fairly easy task, but not much info available. thanks.