SCSI+8 is SCSI I board
And if you have A2000 SCSI+8 board, It looks like rom 3.15 is the last one for this board.
And the bord do use 2 roms. So you have too burn yourself.
So atm you are best off whit the bit slower 2091 SCSI card.
And use the GVP as ram card.
you find the information about this at this page:
BuzzBrain
and exactly how do i configure your configuration
A2000-SCSI+8 REV 1
GVP V1.0 ODD 69D9 GVP V1.0 EVEN 1A3B
it has the WD 33C93-PL controller IC
and the stock standardA2091