At nauseum..318 intake manifold to 340 or 360.

Congratulations on the Duster! Being from Seguin, I saw that car advertised on Facebook marketplace. I thought it was a good looking car, and it sounded good in the video. PM me if you want to find out about local Mopar stuff in San Antonio. Where do you live? I’d be happy to help you when you do the intake swap.