ProStreetCamaro
New member
I have a 14 grand cherokee SRT which has many smaller areas and really no large wide open areas. I also have a 76 camaro street rod/race car and it has larger open areas. Would you choose the 15 or 21 MKII? How well does the 21 work with the 15 backplate? Does it cause vibrations with the smaller backplate?



