Hit up @csctang he can get it done for a lot less than 325 shippedi have a delima car audio factory has a 12 sub box hook ported to 33 hrtz for 99, a custom box will cost 325 and the prefab has a lifetime warranty I have a powerbass 3xl that should be in vented tuned at 32hrtz
Hes a member on here that builds and ships custom ported boxes.I don't understand what I'm checking out what's link please