There aren't many options for cams on the XB motors because they are timed reversed from a Sportster. Basically the most common option is the Zippers Redshift cams. They have different profiles...most common among XB's is the Redshift 585's. But they do have even more aggressive profiles. The basically take your stock cams, machine of the lobes and weld on their new lobes. I have the Redshift 567 cams in my xb9. I'm happy with them. I would suggest stiffening up that bottom end if you are planning on running that much compression. You could always put an 08+ crank in it. Have it plugged and welded, some nice rods. You just need to have the timing mark milled onto the 08+ cranks and also use the front primary drive for the 08+ crank and it'll bolt right into a 07 and earlier bottom end. It's got a bigger crank pin that really makes it a nice stout piece.