Manual valve body benefits?

If you get one they usually come with a brass screen type filter. It's a higher flowing unit made mainly for racing. For a street car I don't care for them. The stock type Dacron filter flows plenty good and actually filters out things smaller than bolts and nuts, unlike the brass screen fence wire filter (can you tell I'm not a fan of them, LOL)... IMO your far better off using a Dacron filter.