Intake Manifold Options 340

Stock square bore or spread bore cast iron intake out perform the performer. The LD340 is slightly better than stock intake and weighs less.

Performer RPM and Air Gap are very close in stats with the air gap edging the standard rpm by a couple horse power.
One question. Why buy a new manifold if money is tight? I bought my RPM for 100 dollars at spring fling swap meet. It was clean and required nothing.