Yes that is the O2 control/cpu, fuel/rev limiter maybe power seat contrl. I'm 6'4" bolted my seat directly to floor and moved all that stuff on to a plexiglass sheet and bolted it where the rear seats used to be. I also put my msd box there.
1986 blk 930
2000 bmw 3 series convertable
1996 Silverton 312 sedan bridge