Update!
So I had one of these new engine oil pans installed on one of my personal trucks (03 lb7, "tow pig"). This is what I have noticed thus far.
First thing I noticed was the engine sound, much quieter! (outside and inside). The engine has way less bottom/lower end noise (valve train and injector noise is about the same) and not as "diesel clattery". I think the stock oil pan is almost working as an echo chamber, being it has less mass and is made of steel (think "bell" like).
Second, Oil psi is up a little, about a needles width higher than before with similar conditions.
Third, the engine now hold exactly 3 gallons of oil (as opposed to the stock pan @ 2.5 gal)
I own a Decibel meter, but could not locate it due to work being done at my home. I will get it located, and do some testing in the next week or so when we have another customer install (or install a pan on the race truck). If I had to guess about the reduction in noise DB, I would guess about 3-5 db less than stock (noticeable difference, easily)
I hope this info will help answer some of you questions! :woott::thumb: