I try to follow a careful balance to create items that use mostly PM original parts, & make them able to always be returned to their original state with no permanent evidence of the conversion.
That's quite a "trick",
Bill! Especially because your customs always look like irreversible conversions to me ...

You should create a "how to" topic on how to create "temporary" customs. It would seem that reversible customs would take a lot more planning and time than a "permanent" custom.
I would really like to know how you do it. And, I'll bet that there are others here who would like to know as well.
Thank you for sharing your splendid fire fighting creation with us.
All the best,
Richard