ok, asked this question in general area with no takers.
Where is the best location to tap into the motor or oil filter location from the masterlube cylinder. The motor is a 500EFI, and it will be used as a preluber?
Suggestions??

I too wondered this, but I found that a bottom of the webpage

http://accusump.com/acc_products/acc_units.html

unit is easier to install

I put a couple of those on some boats. Where the oil sender is, I put a tee there, oil sender on one side and the Masterlube hose on the other side. No problems w/ 2 seasons.

otherside of what dont you need the intake for the masterlube on the pan?

I have one of these installed on my 575sci which should be the same install as the 500efi. I'll have to look but I think it's installed to a oil rail plug that's easy to remove on the port side.

Yes, any one of the rail plugs can be used. The port side has several. I use the one next to the oil sender.