The bellhousing will be a direct bolt-in from the 6 to the V8. If you're running a 230 or 250 engine the motor mounts on the frame will be in the right place, also. A 292 will have an offset mount on the passenger's side, but if you're running one of them already, why bother with the V8?
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!