318 camshaft

hi i´m building a new 318 for my 66 dart gt.
i´m looking for a better camshaft. i want choppy idle and great performace.
my engine setup is 318 original bore, flat top pistons, edelbrock performer intake ported 302 heads with stock valve, edelbrock performance 600 carb, 340 hp exhaust manifolds, 2,5" dual exhaust system home made, stock 904 tranny, 8 3/4 rear end with 3,55 gearing and 235/60-15 rear tires 205/60-15 front tires. mopar electronic distributer with orange box.
anyone who knows a great performance can with choppy idle who fits my car?