I didn`t even know that Scorpion made aluminum rockers for a FE. AS for the Ersons, I`ve had a set on my Fairmont drag car for over 6 years now, never had any problems with them. Another thing to consider is that the Ersons, to the best of my knowledge, are the only true roller rocker available for the Ford FE for under $1,000. The Harlan Sharp, Dove, Comp Cams, Cranes etc all have roller tips, but the shaft rides on either a bronze bushing, or in most cases, just bare aluminum. The Ersons have needle bearings at the shaft pivots. For the money, the Ersons can`t be beat. There are a few other true roller rockers for FE`s, most notably Jessel, T&D, and the FE Max units, but they are 2 to 3 times more costly, and normally require machining to the heads that will prevent the Ersons or any other stock style of rocker from ever fitting anymore. Also the T&D`s and I believe the Jessels as well,
oil thru the pushrods, rather than the factory shaft oiling system. Considering that many 427 blocks are not drilled for lifter oiling, and no factory type FE lifter or pushrod was provided with holes for pushrod oiling, this could be a major concern.