Windage Tray/ Gasket Combo
 

I had to change the rear seal in my 440. While searching Summit for gaskets, I found a windage tray with gaskets molded on it. Summit Part number
SUM-G2339. This worked great. I don't know how long these have been around but it will be using these every chance I get. The pan does not leak and the bolts lined up and went in with ease. No sealant is required and it is reusable.

The Idea sounds good, the pan itself, is it really nylon? The sum-g2339 is for a stock crank.this one is for a stroker crank 4.150
https://www.summitracing.com/parts/sum-g2340