The front and rear rim should be different - but I believe RYCA used the same 2.50" wheel front and rear (If you did not use the stock 19" front Savage wheel). (The number of spokes is the same). The rims have different spoke nipple angles at the rim, and the spokes are also a different length and have different bends. The front hub is a small diameter - the rear hub is large diameter as it has a drum brake inside the spoke flanges.
The bad thing about the rear rim RYCA offered was that it was too narrow for the 130/70-18 tire they squeezed onto the 2.50" wide rim. If you are going to use a 2.50x18 rear rim - then a 120/80-18 tire is a better choice. (I also believe the holes punched in the rim for the spoke nipples was wrong, and you had to use a drill to shape the holes to allow them to work).
If you want to use a 130/70-18 tire - then you really should have a 3.50x18 rim. I got my Excell rims from Buchanan Spoke and wheel and I am running a 2.15 front with a 90/90-18 tire and a 3.50x18 rear with a 130/70-18 tire. (I had originally had a 2.50x18 rear rim and discovered the 130/70-18 tire is a bad fit for a 2.50 rim).
Here is a link to my Cafe tire discussion - unfortunately the photos are all gone. The photos illustrate that squeezing a 130/70 tire on a 2.50" wide rim results in a tread profile that is too rounded as the sidewalls have been squeezed in a full inch.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1435340395Most of the RYCA videos are still on YouTube to help you assemble the it.