value of (almost rolling) chassis BO29

My friend does have the timeline of the car since new and pictures following the history and evolution of the car . this car was raced and butchered into a tube chassis car and eventually stripped and stored for years . most of the BO parts were disposed of or sold and traded off many years ago as the car changed configurations . the only BO specific parts that are left that are the acid dipped doors , my friend did say he has the mirror delete plate . hes a lot more knowledgable about these cars than I am . He is a good friend and I trust him . i just cant see spending that kind of $ for a car that needs everything ... but maybe Im out of touch on the values involved . Ive followed auction prices of complete cars and seen asking prices in Hemmings and on line and they are all over the place . the one plus here is that as much as this car needs , it can be brought back . and I realize that there are some rebodied cars in circulation out there but this car can be verified as real with pictures of the deconstruction through the years by the previous owners and the reconstruction of the shell to this point .