I ran a 850cfm TQ with a Edelbrock RPM manifold on my old 340-4spd Duster. Used the Mr. Gasket open spreadbore to squarebore adaptor.
1970 FE5 Duster 360/904/3.91's SOLD
1973 TB3 SpaceDuster 340/4spd/4.10's SOLD
Moparless for now but when the opportunity is right I'll have another one.