Planning for 408 - Possible Solid Flat Tappet cams

? Did you give jones your head flows after you worked out your Compression?
I would suspect he would fine tune his recommendation as his computer program is based on valve motion and flow and works backward to the cam
ps hope you are thinking solid with EDM lifters
rocker ratio also makes a difference so ask him if 1.6 are needed on In EX or both
Iron rockers will be fine for your build
lots of other places to spend your $$$ than on roller rockers and the B3 kit necessary to be reliable especially with the autocross usage
I'd ask b3 which rockers for those heads as I hear that some work better than others