Not a Hemi but a 3.6 V6

Any idea on how wide this 3.6 is? I have a '64 Valiant and I'm really considering this swap down the road. I've read the engine compartment is around 2inches narrower then the '67 up body.

Its ~23.25" wide at the exhaust ports, which stick out a bit past the valve covers.

For reference a 440 is 23.8"