Shopping for parts to complete an EGR and throttle valve delete. I've settled on ***'s EGR kit w/ the coolant re-route.

The throttle valve is a whole other story. Lots of options out there, ranging in price from $30 to $130, but they all look the same. It's an aluminum pipe with a flange, 4 bolts, and a gasket. So, why the price variation?

Even the higher priced models (***, Sinister, etc. - $109) have reviews saying the bolts were too long and they had to stack washers to make them work. Has anyone installed one of the cheaper ($30-$40) throttle valve delete kits and had success with it?