X2 I wish I would have known about this website a few months before I started buying parts for my stroker, I bought a summit stage 3 manifold (china copy Airgap) and saved 40 bucks on the purchase, then spent $70.00 addl to make it fit on my LA stroker, the machine shop that built my motor did the machining without asking, then charged me for it afterward, they work but I would never buy one again, GO EDELBROCK keep the money in the US. JMO