Banks I know uses the main galley plug down on the bell housing area, and Hypermax and I believe the factory ATS use the top of the block. There is a third spot you can use which is on the same longitude as the first port mentioned, and if you look at the FS-2500 install pics in my Moose Truck album you will see it. However, that one would require the longest hose of all. Jim, in your case I would use some steel brake line material and some compression fittings and fab it up yourself. You'll need to make a T for the oil presure sender, or relocated to one of the other ports mentioned. The line only needs to be as long as needed to go from one spot to the other. The length really isn't an issue. I doubt the oil at the top of the block is dirtier than anywhere else. If you look at the oil distribution diagram in the book, that port gets fresh oil from the main galley just like the bearings do.