4.1" bore LS3/L92??

Can the LS3 or L92 motors be bored to 4.1" bores safely and without being sleeved? because i keep seeing 427ci LS3 motors.. I'm trying to make a LS motor into a 396ci motor using a 4.1 bore and 3.75 stroke (not the original specs of a 396 but very close) i would like to transplant this into my 69 rolling chassic my dad gave me..

also completely unrelated question
what all companies make performance crankshaft for LS motors.. i know of callies, scat, lunati, eagle.. and i can't think of anymore.. and also around how much does a custom crankshaft run? and also i've seen a 3.9" stroke crankshaft before but i can't seem to recall where anyone know?