As far as the oil pump is concerned....what pan are you using?

If you are using the stock pan I would use the m55 pump....

If you use a deep sump pan you could opt for a m55hv but it's you decision...but I wouldn't.....

On a stock pan you would not want to use a hv pump on a new engine because with enough rpm's you can literally run the engine out of oil ( insuficient drain back time/ not enough reserve)

I really personally don't recomend using a hv pump unless needed because with a hv you can move the oil thru the engine too fast not giving the oil enough cool down time before being reused....thus ending up with oil being hotter than need be...just my 2 cents....