Anyone have experience with both?
These (and other similar ones) are about half the price (or less) than TBW:
https://www.ebay.com/itm/114032840273

Made in the USA sounds nice, but without knowing actual benefits I'm reluctant to pay twice as much...

 

I shopped around for a while and eventually went with Z1 for the oil drain hole, 2-bolt removable rear panel, and rear facing holes to create a low pressure zone pulling heat from the engine bay.

 

Looks like a copy of the Zspeed plate. I have one I can probably sell but might be missing hardware. LMK if interested and we can work on a price.

 

New chinese knock-offs are like $75 shipped, with hardware.