You would need two ostriches .. your ECU uses 2 x 32kb chips so you would need to emulate both of them. So, that ends up being $350 JUST for the dual ostrich setup.
I could give you further advice but there may be better options then what I suggest. Other then providing the links and reading them, which is what you have done, I do not have a lot of knowledge ...
I am not sure what type of board you have but you will most likely need a Moates chip burner to burn new tunes for the board. Yes, you can reuse the chips.