There are two low volume vehicle certification engineers where I live. ONe is a fvckwit, the other is a Full GC.
The GC one has had all kinds of trouble with the 5.0. Some of them dislike him since he's an enabler who allows young people to drive cars that have mods.
I know you fullas have all kinds of anti fun laws, but it pays to keep your documentation (Here we get an official tag rivited in the engine bay) in case of draconian lawmen.