I've only had my baby a month and Rob at Keith Craft has been super helpful. Even before I got her, he answered about every dumb question I could think of.
I just had them dyno tune my 392 rated at 430hp at flywheel. The first run was 318hp at rear wheels and before they were done, he had it up to 359!
And that's through SPF's restrictive exhausts and the indy rear end. Runs SO much better!