You have everything you need absolutely, but I think you'd be crazy to rip that whole dash out!! My Colorado was all manual options as well, I bought the OEM parts door panels switches ex. Well when It really came down to it, I ended up going aftermarket kits for the windows and door locks. Much easier and they have been in my truck for 8 years so far, and I only have had to replace one door switch. I do understand the need for the oem look trust me, good luck with your swap!!!