Don't forget to check out Bob Dively models. He sells plans for a 1/4 pitts.
Here's the link
http://www.bobdivelymodels.com/
oops I just looked, He sells kits for an 80 pitts.
Try this link, Several plans available and I believe there is one or maybe more for the pitts.
http://fly-imaa.org/imaa/IMAAads/pepino/