I'm going to switch over to a progressive linkage. I think the 1:1 is unsafe on the street with a big engine. I did some data logging and at 4000 rpm I'm only at 25% throttle opening. 4000 rpm with a 512 inch engine is starting to make some noise and is really moving the car along so it is crazy that it is only 25% throttle opening. That means my street driving is confined to just a tiny bit of throttle travel. The 1:1 might work okay at the track but it is way too sensitive in my car for street driving.