5.9 360 Engine from a 2500 Ram for my 67 Dodge Dart

M1 single planes on E-Gag often exceed well past $400.
I have not seen any M1 dual planes lately. They are super hard to find.
The Edelbrock RPM for the Magnum will make the best power all around and up top.
The Professional Products / Speed Master are inexpensive and makes decent power. There are a bunch of guys here that run that intake will really good results.