**This little-known fact has confused rodders for many years.**I use a Derale pan, the 14201, which is 3" deep. Derale also has the 14202, which is about 4-1/2" deep, adding an amazing 7 qts over the GM standard pan's capacity. Note that each inch of pan depth is about 3-1/2 qts of fluid. The Derale pans have cooling tubes and are powder-coated and have a drain plug and a bung for a temp sender. Nice pieces:

Derale also has tranny coolers and filters and other goodies to rock your world.

OK, Derale, send me the usual payment for shamelessly promoting your products.