locking Fuel Caps for Archer 2 Pa28-181

[Archer181]

I will pay good money for 2 x locking fuel caps for a PA28 Archer 181. Part number 39830-800 or part number 39830-802. It looks like they are standard fuel caps drilled out with a $ 5 cupboard cam lock put in! If anybody wants to sell me a plain fuel cap I can play with it and I'll drill it out and make my own locking version! I can install when parked up if there are any venting issues.

Finally are there any PMA or non approved items that will fit (maybe on the ground not necessarily when in flight). See photos of what I am looking for below

 

[reb]

 

[Arrow4]