They are their Endure-X and are supposed to be direct lubed axles. Never saw a set of the 828-16 rollers but they are for rocker shaft oiled, no pushrod oiling. The 8043-16 (which I’ve inspected) are direct oiled axles and pushrod oiling. @Toluene56 has experience with the 8043-16 and might know if they were drop ins with no clearancing needed?
Did you read the description on the Comp site? It has conflicting information. It says NO oil holes. If there's no oil hole, they cannot be pressure fed, can they? Pretty kornfrooshing.