hi there, me and my friend are building another escort cosworth with the wrc body kit and found it is really easy one you have studied the basics there's no limit to what you want to build if you have lots of spare time on your hands. we got a sunroof model and removed the skin for a carbon one and the shell was a fwd but now one saff coss floor later we have a cosworth shell. you can swap everything over but the prop as that is too long for the escos chassis. good luck with it and i cant wait to see what you get.