Here are 2 possible choices that may be "more correct looking". I am not familiar with the details of an original ring.

This thread has a link to rings that the poster says do not leave a gap. https://board.moparts.org/ubbthreads/show...;gonew=1#UNREAD

Here is a pic of a Specialty Wheels ring on 15x7 magnums/road wheels. I assume the gap would be the same on a 15x7 rallye.

http://www.specialtywheel.com/accessories/trim-rings/trim-ring-15x7.html