[millzy]

I wouldnt say there is much you need to upgrade- b4 wotks well out of the box, make sure you have done the rear wishbone mod to get super short wheel base

also at taly the team drivers drilled a 4th hole on the rear shock tower

if you are runnig lipo you will need to add weight to the car- Raymart and Trishbits do front and rear bulkheads

The kit ball ends are fine -

Kit Turnbuckles are fine as well, i ran mine for a few meetings befor geting lunford ones - but AE do the FT blue if thats your thing

motor plate- if its the stealth kit, you might want to look at the ft one- keeps things cooler- but the kit one will do its job fine

slipper on the b4 is good- its an x factory thing to run a losi one