This is a good time to consider manifold options. What are you doing for exhaust? And 4ontheFloor is right, HEI is the way to go. I just did it myself and am tickled pink by the improvement in idle, low end drivability, and throttle response.

1962 Fleetside 4spd 235 w/O.D. posi 3:90
In the Stovebolt Gallery
1990 Subaru Legacy Wagon AWD 2.2 5sp
2013 Ram Tradesman C/V
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