I ended up borrowing a flywheel lock for an M103 engine from my friend that owns a shop. The tool is made by AST it's part number is M0240, the tool is no longer in production. Others are available, my local dealer could order the flywheel lock, luckily I was able to borrow one.

Anyway the seal is pretty easy to remove and replace.

My Alldata DIY said I need a special puller to remove the hub. Not the case at all according to my friend. He said just put a prybar on each side of the hub and push them at the same time and the hub will come right out. Much to my suprise he was exactly correct. The hub came right out, no binding or anything.