that is a lot of oil. the tranny is just shy of 2 qts anf the diff is just shy of 1. most oil drain pans can hold all the fluid from engine tranny and diff in one shot. so you can just slide it around underneath the car. and depending on the miata. some people with larger hands have trouble with the oil filter. i personally found it easier to remove the filter from the top. it took me about 1 hour for complete fluid change and spark plugs, fuel, and air filter. i had ti use 2x4's under the tires to get the car high enough to drain the fluid out with thcar level and not crush the pan i was using. dunno how the hell i am gonna do that when i get the car lowered....good luck and have fun