I've been holding off pulling the 350 from the 69 till I could read Sean's book. Also been reading a book by Jefferson Bryant on Buick motors, mostly focusing on oil mods. The motor I want to build is for endurance and longevity, not rock climbing but freeway cruising and running around town. I want to know what you guys have done to build your motors to last. Having read what I could I seem to have done everything possible to torpedo my Dauntless, so second time around I want to know what works. Thanks!