This is for my 79 500 with a 302. I need a rectangular flexible intake tube to connect to my breather. Both ends must be rectangular roughly 3.75" width. The Dorman 96050 looks like it would work but no one has it in stock. I'm sure there are work around options. Maybe a circular flex tube with two rectangle end pieces to fit? Any help is greatly appreciated. I've included pics of what I'm talking about. Thanks all!