Small Engines (Lawn Mowers, etc.): briggs engine40H777-0241E1, crankshaft size, shaft diameter

Question
I am trying to replace my engine on my mower mod# 40H777-0241E1 with another engine and im trying to find the shaft diameter and shaft length but im having no luck. It seems like i can find this info on all the other 40H777 model #'s is this some info you might be able to help me with?

Answer
David I have enclosed some information for you.
REPLACEMENT ENGINE INFORMATION

Replacement Engine:
44L777-3136
Replacement Engine
Trim: for pricing ALL:
Top No-Load Speed: 3300
Replacement Shortblock:
6981731
SB MODEL 4467
CRANKSHAFT SIZE
dia x length  
1/8" x 4 5/16"