I'd look for a nice used Zorro busboard. I had one in a 1200T once, RBM brand, and it worked well with a ZII video board I stuck in (Picasso II, I think.) I had such good memories of it, I purchased another Zorro busboard from stachu on here and will be modifying a ridiculously tall PC tower to hold an A1200 motherboard, BPPC and Merlin RTG board.
...and I'll probably get bored and sell the whole setup once it's done!