Looking for Wheel center caps

[Andyzx]

Hi Everyone. I have a 2016 Ram 1500. Came with 17" wheels. I bought a set of cheap used 20" Petal style rim(painted black) but the center caps don't swap. The 17" are close but seems the cap is too big by a mm or so. They fit in but are very loose. They do not snap in and hold like on the 17" rim. Is there a smaller size but with a shorter clip style? Part number?
Hoping someone on here has experience with this and can help me out.

 

[bluethunder2017]

I actually used chrome Mopar center caps from my 2009 challenger Rt. they fit perfectly I have the 20" Laramie wheels on mine.