Looking at unfinished late 80's RV
I'm looking at a friend's unfinished RV6. Engine hung, all assy's mostly complete. Time for CLEANING (some light corrosion on sheet metal and covered with hangar dirt) and updating to latest advisories and mods. Engine needs rebuild, update electrical, replace bearings and seals, remove and reseal tanks, paint, and start on the panel, etc. I have no illusion concerning the effort required to complete this plane. It will be treated as from scratch. The reason I am interested, is the builder is a close friend for many years and now a retired IA. His work is impeccable.
I want to make a fair offer and need to estimate his cost basis. Do not want to make a crazy lowball offer. The serial number is 183. Very early tip canopy -6. Any advice will be appreciated.