I agree with Wise on using the older UD hyd profiles. The 108lsa with those lobes will give a noticable idle but power brakes "should" still function in a stroker combo,but you could spread them to 110 or even 112 if idle vac is a big deal.They run better than most would think(based on specs.LOL) I use them to replace other hyd grinds and they work great. Tim @ Bullet racing cams can get you the cam you need.