You can recurve it yourself & do a much better job than he (or anyone else) can if they are just setting the curve to a set curve for your eng specs (they can get close but not near spot on). set your initial with the "vac gauge method" then set the total to a total for your eng with the plate (initial+slots) SB is 35, then toss the heavy spring & sub in a mr gasket/transdapt/mopar light spring in its place for a start & mix/match so you are just under the pinging point @ WOT up thru the gears on your hottest/driest day then plug in the can to ported & adj it with a 3/32 allen wrench also staying just under the pinging point in everyday driving conditions under varying load/RPM conditions. check rotor phasing/reduce rotor clearance to .015"/reduce lower shaft axial play to .005. EDIT I ordered that coil (CFD478) last night, not sure how much is there for $16.xx to my door but I will see & if it worked for you it will work for me.