Trucker Mods Available?

[NotYourAveJoe]

I have noticed a few companies are making a trucker specific systems. Most noticeably Garmin has came out with a Nuvi 465t that has a build in preloaded NTTS Breakdown Directory that has all truck restrictions including allowed truck routes, low bridges, weight restrictions as well as all truck stops and truck repair shops across US. I was wondering if anyone tried to incorporated something like this into the AVIC? Is there a mod that contains all the NTTS data that can just be implemented into the unit? I am a former driver, and still have many friends who are drivers, this would be something very helpful. Plus shelling out $500 for a garmin with a tiny 4.3" display is a waste of money.