Stop in for a cup of coffee
There’s a reason 440 Source is cheaper in parts than most, they are 90 percent Chinese made stuff, their heads, stroker kits, rods, rockers, shafts, valve springs etc are all Chinese and Taiwanese sourced. Have been since they came on the market in 2006/2007.
doesn’t make their stuff junk, because for Chinese stuff, it’s been pretty good. But if USA made is your goal, Edelbrock, Indy, Trickflow, Brodix are pretty much it for 100 percent USA made heads.