I talked with the Injection Pump rebuild shop and they gave me some pointers as to best methods of getting to the nut between the block and the IP.

He said to use a 1/4" drive with several extensions and a wobble head. Use tape to hold it up write and I should be able to guide the socket onto the nut with a screwdriver or magnet.

I am going to try this today and will let you know how it goes.

Thanks