Thanks 440Jim. Sounds like you have the same story I was told. The block I have on order does have the lifter oil option. And yes KB told me lifter bushings are not needed. I have just kinda been confused due to so many different opinions and also seeing so many people bushing the lifter bores to restrict oil. I'm sure I have a while till I have to make a decision as for my block has only been on order since Oct. 6 2015...