Aside from the pedals themselves, if the tabs for the master cylinders are not on the weldments, you'll have to add them. Still, not a huge deal. I expect you'll want to remove the pedal assemblies in either case, so having the welding done and getting it re-powder coated shouldn't be a big additional effort. The mods to the right-side pedals and the plumbing are pretty straight-forward, shown in drawings 43a and 49. 43a has the details for the tabs that might need to be added to the weldments as well as the pedal modification you would have to make. If the drawings don't come with the aircraft, you can get them from Vans or possibly someone has them in PDF form.