asa wrote:They should fit on those wheels once you remove the adapters. Most people, however, would recommend you sell the wheel/adapter combo and buy new or used 6" wheels so you don't have to struggle with getting the adapters unglued.
There are also two different types of Cleveland brake rotors and they are not very well tracked/documented. One size was originally for 600x6 and one for 850x6. You'll need the ones for 850's, or will need a spacer sold by ABI if you want to use the ones originally made for 600's. The only difference is spacing from the wheel. ABI only sells the 850 ones these days, basically the 600 ones are obsolete in my mind but plenty of them out there.
All this considered, and a full wheel/brake setup from ABI being $1950, many people might splurge for the full set up and sell your current setup in the name of simplicity and new parts.
The brake rotors for the 8.50s that are spaced further away are also thicker and for double puck brakes. I've never seen a thin disc that us spaced further away, or a thick disc that is close in for a 6.00.
I would agree that it's probably best to sell your current wheels. The spacers can be very hard to removed, and surely someone would pay decent for a setup like that.