Front outer and inter portals, kept the plastic arms as a weak spot, For the rear, just outer covers, might go for inner covers too, but dont feel it needs it atm.
Get underdrive gears, stick them in the rear, they arn't cheap but makes a difference with climbing. You can get overdrive gears too, but the underdrive gives the same effect, if your want lots of overdrive, you can overdrive the front aswell as underdrive the back.
We dont run wheel weights just heavy alloy wheels that work out to be 150g each with tires fitted.
All up the trucks about 5kg.
I got mine from local shops and fitment mmm, well getting the bearings out isnt fun, and irrc the front inner covers didnt come with the right length screws and they were cheese.