[fred cook]

Just curious, what do you guys see as the most difficult job when rebuilding a 911 engine? Assembling the block? Compressing piston rings to assemble pistons to cylinders? Assembling the heads? Cam timing? Or???

My personal choice would be installing the second piston pin circlip! Getting those strong clips to compress into place while working among the cylinder head studs is a real pain! Most likely, there is an assembly trick that I don't know!