seems the bottom of the throttle body hits the thermostat housing once you put the plate on....I have a BBK 58MM so it's a bit bigger than stock...I doubt I'm the first person to run into this....how much grinding did you guys have to do and how much is "safe"?

 

You have to grind alittle off the housing and some of the TB bypass. It should fit fine then.

 

I had my kit installed and they informed me of the grinding that was required in order to install the package. I am sure that if you grind only enough to make it work it should be fine. TNT would probably know best as the design is theirs and they are aware of this step.

 

You also have to grind in order to install our plate. It is a very tight fit.
Dave