Hi Mark
I know Siew, the owner of the Pegastol/701 in WA. He lives not too far away from me and I do maintenance on his plane from time to time. I also built the only other Pegastol kit in Aust, unfortunately I also wrecked it. (but that's another story) I still have the assembly book around - maybe! The fuel tanks are roto Moulded poly, I had four tanks in mine, the exta tanks were outboard of the struts.
I'm surprised you're considering building Peg wings for your Sav, last I saw you were sold on a Rans kit? what happened to that?
As JG says in that article, I don't think the Pegasair wing will fit the sav, and to change the front to rear spar measurement would change the wing profile blah blah blah. But building the whole plane would be the go.
The guy that bought the Pegastol rights was in Alaska I think, had his number a long time ago but never spoke to him. He never produced any new kits, just built the last Peg wings. The templates and jigs are probably in his back shed gathering dust. The guy at the start of the video was Giles Boulanger, a director of the company and a WW2 bomber pilot, a legend.
Call me if you want more info or photos ( I think I still have some)
Cheers
Rick