Agree with Bugcatcher. I also have added 100g of stick-on car wheel weights to the canopy for CG.
Here's a run down on the changes I have made to mine for mostly cosmetic reasons.
0404-701 EX floating rubber. Added for soft undercarriage mounting.
0414-188 WC landing gear. Clean sexy and very rigid. Sits flatter on the ground. Mounted with legs swept backwards improves ground stability tenfold.
0414-325 E3 gyro mount. Nicer than the plastic originals.
0414-335 RF carbon tail blade L=105.
0414-338 RF carbon horizontal fin. Love the look and great for orientation.
0414-339 RF carbon vertical fin. Rubber mounted. Came with my Freya OP II. I believe the RF twister fins suit the Turbulence very well.
0414-483 D3 reserve tank.
0414-491 D3 under plate mount F. Matches the front unit and removes the flex in the carbon plate.
0414-503 D3 FRP cabin (white). Much nice build quality than the airbrushed unit. Easier orientation and gives that sexy original D3 wasp look.
2506-039 EX-03 Washer. I like the look of them.
2511-003 Cross member M3x26 in additional to and replacing and 2511-033. Again I like the look of them but also added some here and there.
Hirobo 2513-079 Skid Rubbers. Otherwise WC undercarriage would destroy the kitchen table!
JR Propo 70048 Foot skid cap (4). These are soft and tend to be more secur than the plastic Hirobo units.
Fun Tech F202 720 FBL.
Mikado VBar 5.3 Pro
Futaba BLS275SV x3 Cyclic.
Futaba BLS276SV x1 Tail.
Futaba BLS272SV x1 Throttle.
Futaba GY701 Governor.
I have also installed softer dampers and will soon install SDX dampers. I much prefer softer damping for my more relaxed flying style.
Futaba T18SZ, JR Propo XG14, Hirobo fanatic!