401 ci engine

That 401 is an AMC engine that grew from the Rambler 390. Good torque engine ina Jeep and in an AMX they ran good. Indy Cylinder Head is making heads, etc and Edelbrock also is making heads and manifolds. as far as running one in a mopar, I have never seen one swapped in. There is a good market for them with the AMC people, and the Jeep guys that don't want to ruin thier Jeeps with Chevy engines are always looking for them.