How Many Of These Parts Are Interchangeable, Mainly The Front End Parts.

Heims is about it and maybe the hubs

front spindles and axles i think

Trailing arms and frontend is more like pro-1

U can use the same a arm mounting blocks on both cars. Also can use same a arm but u have to change how u mount the bottom of the shock on the bottom a arm and run the shock inside the upper a arm. the hubs, servo mount bracket and steering arms all interchange. I have one of each car and i have used or switched the front around several different ways. the cat five rear axle bearing housing is different to the wcm. I have not tried to switch them, but i do not think that will work, not certain, might try some time. Both cars work great but i have ran the wcm for several years and i have a slight favor toward it over the cat. the cat runs great and is fast but i think the wcm is easier to work on or keep in adjustment. I have a truck body on the cat now and only ran three races but i am satisfied with it. hope this helps.

thanks for all the input.