Hello everyone, I’m new to these forums. I currently have a 1986 Toyota 4X4 truck with 188,000 miles (I've had it for 20 years and I'm the second owner). I have on order a 08 Tacoma 4X4 regular cab SR5. I should get it in 5 to 7 weeks. Here is my question. I’m interested in the Deflecta-Shield Challenger narrow tool box. Should I get the one for a mid size truck or a down size truck?