Is there any difference between the greddy and trust smic or is it just different stamping(trust or greddy on the side)? Im assuming the one that has the trust stamping was from Japan and greddy from the US?

 

Trust owns GReddy, so they should be the same.

https://en.wikipedia.org/wiki/GReddy

 

FWIW they make good quality parts...at least my experiences with them were good. I’ve never used their SMIC though. My only thought on that is that I wished the had made a custom duct instead of modifying the stock duct to fit.