I think the issue is the stores are out of stock because the product is not coming from China. A road trip to an empty warehouse won't help. A LOT of custom auto parts manufacturers/suppliers are backed up. People were staying home due to Covid and starting projects. It didn't help that factories were shut down and dealing with reduced work forces..
Yes Trick Flow was a local company that was acquired by Summit. I believe they started out making Ford heads and grew from there.