ok here is only what i know..
Infitiv towers (both models) Fits it fine (plastic and metal ones)
(totally horrible towers!!!!)
the Rbm Towerhawk towers (all makes) doesnt fit at all, i had to lay all the parts wideopen on the desk to use the thingu just got,
so in the end i bought an mediator and rebulided my towerhawk 2c to fit it.
anyway , dont have any high hopes for zorro in your a1200, yes its nice and all but VERY slow.
I would recomend you to test a mediator system just to see the difference.
good luck