[Scud422]

Can the sensor be upgrade at all for attack then? Or am I stuck with sensor 3 + gunnery skill 6 + hot sim + smart link?

[Dragoon]

Really the only way you might be able to get an upgrade is to talk to your GM.  If a higher grade sensor is installed in a sensor suite it can increase the rating.  For example if you install a rating 6 camera, you might be able to use that sensor as your shooting sensor.  Page 334 of SR4A shows that if you are using only a single sensor for something, you use the rating of that sensor.  However if multiple sensors are included you use the package rating of the sensors.   Additionally, you can raise the sensor rating by installing better rated sensors than what is on the drone.  Since you use the average rating of all the sensors, you might be able to take an improved sensor package from arsenal and cram enough sensors into it to increase the rating of the sensor.

[JustADude]

Are there any rules for increasing the body of a drone or of the Otomo specifically?

Not really but, being a drone, a Body 6 Otomo can have Normal Armor 18 + Smart Armor 10. That gives it 28 points of Vehicle Armor, which is Hardened, and the Smart Armor nullifies 10 points of AP off the first 10 shots against it. Just gotta talk your GM into letting you over-mod the thing to bring its Speed and Acceleration back up to normal.

That means even with a Thunderstruck Gauss Rifle calling +4/-4, you'd have to get 7 Net Hits to do anything to it.

[Scud422]

Updated with 5 points floating for a contact that the group might need.
Changed a bunch of cyberware mods to drone mod counterparts which saved a bunch of money to increase the sensors to the max. Changed the signal to a nonstandard signal to bump the range to 6 and increase stealth. Dropped the pickup truck for a repeater drone.

[RiggerBob]

Why are you listing 'custom nexus' instead of a regular commlink? The processor limit is nice for running many programs but nexi got there own costs/availability table (UW, p. 198). Response(5) for a nexus alone costs 10000 ¥ with an availability of 20...

Dropped the pickup truck for a repeater drone.

You still have the Fake License (Truck)...

[Scud422]

Went with the custom nexus for the extra power and didn't need the portability. I used the rules on unwired to give it a base of 3, then used the upgrading rules in the core (pg 222, anniversary edition) to save on money and rating.