You can calibrate 0-100% anyway you want, so it doesn't have to be open 100% to call it 100%. That's kind of where I am, it's pretty close so I bought a 92mm throttle body to compensate.
That's what I'm thinking as well! I've also got a 92mm TB... My diesel moves way more air than this engine ever will and the intake elbow and grid heater is way more restrictive than this 92mm throttle body will be at 90% open.