Started to customize and mod that one right out of the crate in 07!
Took it from a 96 to 103 with cams. Last year replaced heads with ported ones and even added a heavier cam. Changed out the pistons and push rods also The most improvement came from the hd race tuner and klock werks double back header pipes along with vance and Hines mufflers. This winter had the intake ported and the tb bored out. Would like to do a rear tire 180 kit but $2500 is a chunk of cash right now.
Lars