[V8] PS pump interchange-ablity

[J123fs at aol.com]

Hey all,
Has anyone ever replaced their hydraulic pump on a V8 with one from an  
earlier model, say perhaps from a 86 5000TQ?
I know in principle the pumps work exactly the same, but are the mounting  
holes and bango bolts the same size? 
I would not bother me if the location of the hose inlets and outlets are  not 
exactly the same. As long as the mounting holes line up to the brackets to  
the block. Initial eyeballing of pics of new ones seem that they are the same.  
Can anyone confirm?
I have a pump from a 86 TQ that was rear-ended in storage, and I  not too 
sure I want to go make the trek and dig through 50 containers to see if  I can 
find it if it is not going to work.
Thanks in advance,
Jack



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