My Mustang is a 1970 Mach 1. The build is a full restomod with 2nd Gen Coyote and 6R80 AT. I used a 2017 GT bought at auction as a donor. I am into the plumbing phase now. The coolant recovery tank is becoming problematic as I do not have at much room between the engine and radiator as there is in the GT. A solution will be found even if it means having a custom part made. If you are interested here is a link to my build thread.Well that's a bummer. What year is your mustang?