Sr20det power steering pump bracket

[notstock]

I was just about to purchase a power steering pump for my sr20det from phase2motortrend.com when i noticed that there was an optional bracket available.
Nissan Power Steering Pump : S13 SR20DET (http://www.phase2motortrend.com/nipostpus13s.html)

My car is an 89 240 fastback with a swapped redtop sr20det motor. Is this other bracket necessary or is the one that is already on the motor the same thing?
Power Steering Bracket (http://www.phase2motortrend.com/postbr.html)

[Odysseus]

You know you can save yourself lots of money and use a DOHC KA pump right?

[notstock]

i heard that those do not correctly line up with the block. I'm just an absolutle perfectionist. I'd rather spend the extra money to know that something is OEM and 100% correct under the hood.

But do you have any idea if this bracket is neccesary at all? im pretty sure it's not but i have to ask.