I bought a SP RD and BB from my LBS recently. NIB and a total of 60 $ and I let lust have the better of me. Now what do I want to do with them. Will the RD index with 8 speed DA ? It was made in 89, what were it originally meant for, 7 or 8, 126 or 130 mm spacing? Can I use the BB (english 109mm) for anything else than Suntour cranks?