Do all small block chevy's have a pilot hole?

[Billy]

I need to know if my 1975 chevy small block 400 that powers a 1/2ton 4x4 would have the pilot hole in the crankshaft for a four speed manual transmission.. I have bought another 75 chevy truck and it has a four speed in it and I want to take the 400 out of that truck and put it in the 75 with the manual.. From the factory the 400 had a automatic tranny behind it.. And I don't want to pull the engine out to find out that I cannot put a manual tranny behind it without changing out the crank, because the is a overhauled 400.. Any thoughts please list.. Thanks...