PE. There is one reversal kit out there*. It called the Foma Reversal kit. It's the one I am using and the developer in it is not energetic enough for Tri-X. that is the reason for my journeys into the unknown.
I need to process the film myself as it's an important part of my working method but also just because I get a lot of satisfaction from doing it myself.
*although Adox have announced one for their Pan-X Reverso Super 8 film (ie. Scala). We don't know when it will be available even if it did work with Tri-X.