does that mean that I can put an engine piece like say...a TRD LSD for the echo into my little xA? and suspension shiz for an scho into my xA?

 

the LSD will work, but the suspension stuff is not recommended IMHO, though they share the same drive train, the bodies, weight distrabution, and some mounting points are different, all adding up to different geometry that may cause some parts to wear quickly, perform badly or flat out fail.

 

so basically any engine and tranny stuff would work? cool, thanks for the feedback

 

yes, if it will fit with the body (ie.. though echo exaust and intakes will fit the engine, they will not fit in the xa due to the fact that they are bent to contour the cavities of the echo and will not fit properly in an xa)

 

suspension stuff works.
the springs are EXACTLY the same between the xA and the echo. koni confirmed that the part numbers for the echo shocks/struts are the ones to use on the xA/xB.