About to pull the trigger on a ld3d kit for low/medium grip outdoor dirt. Aside from arms whats any other parts I should buy for spares?

Also what do you guys recommend for machined pistons? Do 13mm pistons for AE work? Also does anyone know if the ld3d comes with softer springs in the kit or is the only difference the layback tranny/longer cvd’s? Any other option parts I should get? Was going to get brass C block at least.

Where’s the best place to get parts in the US? Amazon’s selection of parts is pretty limited.


Sorry don’t have time to read the whole thread. Thank you.