customer service is always good
Great construction on the sub box! Fits my 2014 Silverado perfect! Sounds awesome! Also purchased the back seat spacers this definitely gave me the clearance needed!!
Product works, I didn't have to make them myself. Only thing I would add is a new center bolt for the 40 seat. The original is not long enough to compensate for the height difference. This bolt should be included, I have to go purchase one and not have my back seat secured until then.
There are no bolts used for this spacer kit. It's threaded studs that are welded into the floor that these slip over.