For anyone curious, I have found the following JConcepts parts that work well with the Serpent Spyder SRX-2 cars.
1/8 Scale Finisher wing buttons, they come in blue or black, and look GREAT with stainless flat cap screws.
http://www.jconcepts.net/store/index...roducts_id=674
JConcepts - metric washer set (.5, 1, 2 and 3mm thickness) 16pc.
http://www.jconcepts.net/store/index...roducts_id=679
JConcepts - 6.5" Hi-Clearance wing (fits B5, B5M)
http://www.jconcepts.net/store/index...roducts_id=785
The cutlines and pri-dimpled holes line up perfectly on the B5 and B5M wings.