First of all, I couldn't figure the best place to put this post, so please move it if I chose wrong...

I don't know if I am skilled enough to fabricate the "kicked-out" sump, but I'm sure I can piece together a decent windage screen, trapdoor, and baffle set for my stock pan.

Couldn't I just make a windage tray with some steel screening and some long hinges(?) folded over and bolted together? Also, in the case of trap-doors, what is the best design?

I might be in a little over my head, so just tell me if I am...

 

if you like doing things yourself ..go after it !

but it will be cheaper in long run to go buy a pan such as Moroso with swinging/hinged trap door at sump

at very least ..go visit your local speed shop or look at online catalogues at inside pics of oil pans

one more thing to watch out for ...is having enough experience in knowing how much metal stress you will cause into pan with welding

how and where your finished oil pan might shift under heat
and crank windage, and car motion with oil weight in pan