Heads up, the c172p has been given a nice little face lift.
Some of the more obvious additions and corrections...
Numerous mesh corrections, there were several parts of the mesh that were messed up.
Tail redesign.
Rudder redesign.
Livery corrections and realignments.
Several miscellaneous UV map corrections.
New recessed fuel caps on the wings.
Front windshield redesign to allow for proper vent fittings.
I'm not sure when the new work will show up in fgaddon but you can get it from the development repository as soon as it is all reviewed, approved and merged with master which hopefully will be in a day or two.