Summit ignition box

I was speaking in general terms. Not necessarily about the OP's car. A well sorted ignition OF ANY TYPE can make the difference between won and lost races. And as I've said multiple times now, I don't know 100% whether that unit takes a resistor or not. That's why I recommended him downloading the instructions to be SURE. I've used MSD before. I've not used the Summit box before. Have you used this exact Summit box?
I'd be shocked to find out that the summit box is not a relabeled MSD box...