yes. As Jpar would say "harbor freight" !! But I'm not learning on my sub frame connectors. Only, and ONLY if I can't get somebody to weld them in for me.
DIY subframe connectors or uscartool? If you’re doing diy connectors, I’d say that’s one of the best things to learn/practice on since it’s all nice, thick steel. Much easier to learn on thick stuff than thinner stuff.