Most of the factory 15" Rallye trim rings were actually for the 15x6.5" rim and were 1/2" thinner than the real 15x7" trim rings. The latest MP 15x7 trim rings are 3" deep instead of the 2 1/2" older ones. I don't think the new ones or the original 15x7" trim rings will fit a 15x6.5" Rallye wheel.

15x7" Left and 15x6.5" Right