Will my two engine swap out clean or do I need to make mods?

[mookiex4]

I have a 1965 GMC 1500 series pickup truck. It has the 305 V6 that used to also be in the bigger trucks like Dump Trucks and Busses.

I have available to me a 1965 Chevy 327 V8 from a similar Chevy pickup truck.

I was wondering if it will swap out without modifications. The 327 only has the flywheel. Can I use the pressure plate and bell housing from the 305 V6? I checked the clutch kits for both trucks on www.Rockauto.com and they are the exact same part numbers, but that doesn't tell me if the Bell Housing is a match or if the Motor Mounts need to be moved?

When I had my 64 Chevy Stepside the straight 6 came out and a 283 went in which used the same bell housing and clutch parts from the straight 6. I want to believe that the same goes for my current situation.

Thanks for any help you all can provide.

Mark