So I'm finally am ready to upgrade my camshafts. I've narrowed it down to either the FRPP Hot Rod Cams or the Comp Mutha Thumpr Cams. I'm leaning towards the FRPP only because it doesn't require the extra phaser limiter kits. However, all the videos of the Mutha Thumpr sound amazing. I've heard the Mutha Thumpr cams causes more driveability issues in comparison to the FRPP cams. Has anyone installed either one of these camshafts and have any advice on the sound & install? FYI, its for a 2008 Mustang GT with Pypes Longtubes, Pypes cat-less H pipe, and Pypes Pype Bomb Axle Back.