Rebuilding Perkins 4108

[SailnParadise]

I am preparing to rebuild my Perkins 4108 myself without fully removing it from my boat. I have an Irwin 37. Not in an area with a yard and need to get it running ASAP. A little about the issues I am having: Decent sized oil leak. Left for a month after filling it up and it was almost empty. Stalled twice for what I assumed was the clogged fuel line from a tank full of gunk. Bled lines for days and never got her to turn over. These is a leak at the gasket for the coolant tank to the head. And it was hard to start prior to any of these issues and now it won't start at all. Replaced the Starter, Alternator and fuel pump. Looking for any suggestions to avoid a full rebuild so that I can get it to a yard for haul out.