I don't think that new e-start kits are available for those models,unless you found a dealer that still has one in stock. I do think the start kit from a 2004 model will work. I am sure you realize that you would have to use the 04 clutch with the ring gear on it.
The Edge electric start kit will work on the Edges, 2002 to 2005. I pulled the starter off my 2002 800 and installed it on my 2004. I've installed the same on 2005 Edges. You will have to find a kit left over at a dealer or find used. Pleanty of reman and new starters still available.
Ron