At this power level and with the potential G forces, a Milodon dual line oil system is probably going to the go to on this type of deal. The standard oiling system improvements are mandatory also, i.e. high volume pump, passage enlargement from mains to main oil galleys, block feed to heads out of number 4 main and re-drill feed for heads into lifter feed/main oil galleys. With a solid cam, bush the lifter bores, this is usually mandatory at this power level anyway in order to correct the lifter bore angles to the cam. It used to be standard practice to only drill a .040 oil feed hole in the lifter bore bushings for the lifters if hydraulic cams are used, but I think it's best to have them regardless of cam type and wouldn't do without them. This is also the kind of build where 3/4 or full groove main bearings are a good idea, too.
