It's easy if you stick to 10-speed SRAM - everything is compatible with everything else. @amey 's derailleur will work, then you just need to sort a shifter.
Good plan.
@mi7rennie started
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It's easy if you stick to 10-speed SRAM - everything is compatible with everything else. @amey 's derailleur will work, then you just need to sort a shifter.