I dont think I can help you by Thursday coz the engine is still in my MR2 and my 9-5 job demands more than 8 hour days so I dont have any time to take it out. Also, I wont have access to an engine hoist until Sat.
If you are talking about Gen 2 and 3 in terms of Jap SW20 MR2 slang, then yes, mine is DEFINATELY a Gen 2 SW20 MR2. Gen 1 SW20 3SG's were made in (1990-1991 with AFM), gen 2's made in 1992-1993 with AFM, gen 3s 1994+ and all had MAP 3SG's.