I gave away a performer due to its lack of power cast iron was better. Weiand are decent intakes But on a small block the LD 340 and or M1 single plane seem to be the way to go. There are sevreal others I have used including street dom and strip dom all have good and bad feature The street dom on a small block is pain unless you modify it heavily. Strip dom eats up low end but is good 4K and up.