have a performor rpm intake on my built 350 which is a spread bore and my new pro systems carb is a square bore. any ideas on help. my intake is all port matched to my heads so im up in the air what to do. cant find a good intake to fit under my stock hood on a 72 cutlass

 

The Performer RPM manifold will accept spread or square bore carbs.

 

I just installed a performer RPM on my setup. the edelbrock square bore carb bolted up without any issues. It was a turn key swap.

Even the stock air cleaner fits without any issues.

 

no performance loss

 

Yup, I used square-bore Holleys when I used the RPM.