RE: Bowtech Extreme Solo
The Extreme Solo was offered in two brace heights in '02, a 6" and a 7".
On the 6" version, the 26" dl called for a # 5 mod. On the 7" version, that mod would have been numbered 6. Either the DS or BT mods would work; however the DS mods were meant for the Inifinity cam and would be shaped like a half-moon.
Hope something there helps you out in some way.