crankshaft question

I have a 318 out of a stick shift '83 van that I am assuming is a cast crank (no oil leak out the back) but have not pulled the pan yet. My 383 forged crank in my 400 was drilled deep enough and had a step but was not sized for a pilot bushing. Any way you look at it converting to manual trans can be a pain when it comes to the pilot bushing.