i have been going over some options and have come up with 3 options for the crewcab owners for a sub upgrade. i have a dual 8" dual 10" and dual 12" option that will be available for you guys. dual 8" setup is designed to not take up any additional space keeping your back floor free and clear. dual 10" is for those of you who want a bit more punch to the system. and the dual 12" is for the ones who are bassheads. unfortunately this is all just ideas still. i need a truck to experiment on. so if any of you colorado owners dont mind parting with your truck for a couple weeks, i can make this dream a reality for everyone. and in return, you will get a highly dicounted audio system. but let it be known, im actively working on audio solutions for you all