who is running MRL (BAM) Lifters without lifter bore sleeves

Sleeveing the lifter bores is good and better if the shop has the tooling to correct the location and angles - check their tooling
I do like those "bypass the cam bearing oil feed" mods
the cranks and rods need all the oil they can get
oil through the lifter / pushrods for some reliable rocker adjuster cup lube (does not take much)