They didn't pass my "sniff test" but I've only built a few, not nearly as many as you have, & I do use their parts as well as other cheap ones but pay very careful attention to certain areas. I wanted the Comp Magnums and considered the SpeedMaster copies but another member sold me his Comps. Since I'm also on a budget I researched it and Scorpion is the way to go from what I gathered. If considering SpeedMaster rockers ya may as well buy Deep Motor (eBay) instead- they're selling a TON of identical parts. Basically Skip White, eBay, and SpeedMaster all sell the same stuff. His N.K.B. heads (and others), cams, all of his intakes... identical.
I guess I'm saying that I haven't got too much feedback about the SpeedMasters but for a similar price everyone loves the Scorpions.
I guess I'm saying that I haven't got too much feedback about the SpeedMasters but for a similar price everyone loves the Scorpions.