Just curious, why or how did you come to the 10.5 ET as a goal ? Did you ride in a friends car or own something that ran 10.5's, like a crotch rocket ?? The reason why I'm asking is 10.5's might sound like a cool number, but you'll need your 318 to not just beat a New Challenger R/T, or a Challenger Scat Pack, but you'll need to beat a stock Hellcat with a biting tire !!! That's some serious mustard, because you have a lot of ketching-up to do !!