I'm going to be dropping a crate engine I'm my truck once I get it an just wondering what kind of stuff to double,triple check pretty new to mechanics but I know what doing just want to make sure I get it right the first time.. My concerns are intake,vacuum lines, setting torque converter, and lining up harmonic balancer

And also some good oil to break in my engine an for every oil change? I know royal purple has some break in oil is it worth it or am I paying for the purple coloring on the bottle