This was an engine rebuilt in 2000. (....)
if the engine has been sitting unused for 14 years, I'd want to do some basics before trying to run it, like squirting some oil in the cylinders and turning it a few revs by hand, and winding the oil pump with a drill motor for awhile, checking the valve train for oil distribution .... then as Carl suggests, set it up so you can run it for a proper cam break in
Bill