I don't know much about Champs, but this sounds interesting.....
http://cgi.ebay.com/ebaymotors/1set-New ... enameZWDVW
New wood spars offered on ebay
New wood spars offered on ebay
You better check them out personally before you purchase them from Ron Pearcy at Rainbow in Moses Lake....others have bought them with the holes drilled in the wrong places. etc etc..Check the internet.. I personally bought a set from Rainbow aka Ron for a 7AC....one spar had the holes drilled in the wrong place and then filled..plus the same spar was cut too short and a piece spliced in ..not good enough to pass inspection or according to FAR 34-13... I got ripped off..Buyer beware..ps.. the fuselage wood stringers I bought were cracked and unusable..etc so I ended making my own from hemlock