I've got an 8-speed SRAM shifter that I was given by someone who had just done a singlespeed conversion on his MTB. The problem is, I don't have the rear mech the shifter was operating, as it was bent (which is what prompted the singlespeed conversion). What I want to know is which SRAM rear mechs will be compatible with it. Is the cable pull different for SRAM road and MTB rear mechs? What about a mech designed for 8-speed, will that be different to one designed for 7, 9 or 10? To make matters worse, I've seen "Shimano-compatible" SRAM shifters as well, how do I tell if the shifter I have is one of those? It's in my shed somewhere at the moment, but I can go and find it if pictures, or the model number, would help.

Thanks in advance