I checked some of the books but didn't notice anything used by CorSec for their piloting planetary operations? I was thinking about the silver cloud airspeeder with some armor and mounted heavy blasters. Any suggestions?

Using the stats given of a generic vehicle and reskinning it to something you specifically want is probably the way to go. As this RPG system is highly narrative, ballpark-ing the stats should be good enough.

If you want something crunchier, check out the paramilitary chart in Dangerous Covenants to modify vehicle stats for CorSec use.