You live and learn.
As [MENTION=4740]jeffreylyon[/MENTION] said, most of us that buy parts from the UK vendors (Pumaspeed, ITG etc) try to find out if the part is compatible before we bring it over. A lot of the parts work because our cars are far less touchy about what we throw on them.
Additionally Mishimoto customer service leaves a LOT to be desired, so I can see your frustration there.
As [MENTION=4740]jeffreylyon[/MENTION] said, most of us that buy parts from the UK vendors (Pumaspeed, ITG etc) try to find out if the part is compatible before we bring it over. A lot of the parts work because our cars are far less touchy about what we throw on them.
Additionally Mishimoto customer service leaves a LOT to be desired, so I can see your frustration there.