Differential drop kit

How do I know if this dumb*** garage that put my lift on actually put in the differential drop kit on the front. Visually my cv axles don't look like they've moved. So they are now at some sort of an angle due to the lift. I crawled underneath but didn't see anything, keep in mind I have no idea what to look for. The lift was only a 3" lift. @csuviper @TruckyTruck -

 

If you look where the differential is bolted to the truck, you should see round spacers between the dif and mounting point. The bolt should run through the spacer.

 

Yep, the best way is to crawl under and look.

 

You have to drop the skid plate. then on the frame-rail cross-member, you'll see where the diff mounting bolts are (one on each side). Look for a donut shaped spacer between the diff mounting flange and the frame rail around each bolt.