A-Body Layson's Headers Bought for '65 'Cuda - Never Installed = $250 + Shipping

moparlvr166 said

Also sent PM, not sure who was 1st.
Question ; are the ports larger for 340 size?

Click to expand...

The two outside ports are 1.75 x 1.00. The two inside ports are 1.75 x 1.25 at farthest points of openings.