Ah yes - Chinese crap. Taiwanese is usually acceptable, but, Don, it looks like you got some bits and pieces that wasn't .

My oil pan is a Ford Motorsport unit from Taiwan, but a front sump unit and the fit is fine. The pickup is whatever came with my Melling oil pump, and of course fit fine - and it all came from Summit.

Too much after market specialty stuff is Chinese, but it's that old problem - cost. How can we make these items to sell at a reasonable price and remain competitive? And can the Joe Blow Oil Pan Co., Podunk Holler, Any State, USA stay in business when his profits are taking a licking every time he sells an oil pan just to remain competitive with the Summit's, Speedway's and Jeg's of the world. He makes less then a break even return while the others make 4-6%(maybe), but rely on volume for their bottom line. Summit used to have a $2.95 handling (and shipping) charge. Now it's $9.75 to $11.75 depending on the value. This can be a good or bad deal depending size. I think they charged me $6.95 for shipping a Ford crate motor to me a few years ago .

So - Economics 101 = supply and demand. And sometimes it ends up being junk