Kevko F303 pan for 521 dyno engine

Building a 521 for some dyno testing. First time I've built this combination. I decided to go with a Kevko F303 box oil pan since it looked like it would be a good dyno pan. Nice and big, has a windage tray and the price was right. Engine doesn't have a vacuum pump on it at the moment since I'm hoping that the deep pan will help keep the oil out of the way. I can add a pump down the road to see if it makes a difference.
I also used the Kaase pump due to the recommendation from the engine builder. He said that he had seen other pumps crack in these types of engines.