I asked the same question last week about the 91 - 93 FSM's. Now that I think of it, no one really answered my question. I have just come to the conclusion that it is for both engine models unless otherwise specified. Anyone????
w/ advanced timing & Stillen POP
All the '91-'97 FSMs have the GA16 and the SR20. In '98, they made 2 seperate FSMs. I'm not sure why, but they did. If you have a '91-'93 SR20, then any FSM in that range will work. If you have a '94, you will need a '94 book. If you have a '95-'97 SR20, then again, any book in that range will work.