hi Richard- hope all is well. I agree with blueskies suggestion above using the strap idea, perhaps strapped into wall studs vs ceiling. In addition, I'd strategically place 3 or 4 old tires (maybe old race tires from your bn7!) to cradle the chassis on its side and use a come-along to crank it upright (assuming you have a few strong anchor points in the wall studs). Or an engine hoist could probably tilt the chassis 80% of the way and then the straps against the wall will just ensure it doesn't fall on any innocent bystanders during storage.
I'm thinking of doing the same thing with a project I have, just need to find a solid wall to lean it against!
take care!
Austin