I have two skar tx4 speakers but I measured wrong and my 95 monte carlo has brackets for 5.25 inch speakers. I don't want to start over again having to order a new amp and speakers and send it all back, so I want to know if there are any adapter brackets to go from 5.25" to 4" or if I have to make my own. Ive only been able to find adapters that go up in size from 5.25 tp 6.5. Anyways, all help is appreciated and any links to relevant products will be super helpful.