Welcome to FTE. Yes, David Lott at Diesel Innovations makes a custom up pipe configuration that eliminates the donut gasket. 7.3l Stainless Up-Pipes

It's also possible to get different up pipes when you upgrade to certain turbos.

The cheapest option is to just go with the International up pipes from one of our sponsors, unless you have a brother in law that works for International.

Riffraff Diesel: International Bellowed Up-pipe Kit 99.5-03

Replacement O-rings for Ford Diesel Engines

The last link has a link with instructions of how to change them.