Found it! 68 B-body 400. Last 2 eng #'s are 27(where ever that is?). Checked my 68 GTO engine. Last 3 eng #'s are 071(1st 4 #'s are to rusted). # is on top behind R/R behind cyl head. Crk # is 9773524(on front counter wieght). Cyl bore width should be 4-1/16 to 4-1/8th(from memory).
