Hi all -

I was given this 70" model ~15 years ago and it was old then.
It doesn't match current Sig (http://www.sigmfg.com/BuildManuals/SIGRC3Cub.html), Great Planes nor Berkeley plans in detail and I hope someone can help I.D.

I'm wondering if Sig's design has just changed over the years?
It does have the dowel-between-halves stab like Sig, but shapes of curved parts, cockpit wing fixture, cockpit rear bulkhead cutout shape, no vertical members in aft fuselage trusses are unlike Sig.
There seems to maybe have been some repairs/mods - it has a (homemade?) fiberglas tank cover front cowling as shown and a couple upper deck formers that appear to be "aftermarket".

I can post more pics if helpful.

Thanks.

Terry