If I were to attempt this project, which I wouldn't, the first thing I would try to obtain would be a dimensioned multi-view CAD drawing of the parts involved. Those would give you an idea of what you are in for. I hope you have experience/access with/to a torch, welder, plasma cutter, industrial bending brake, full size lift and a body dolly.
Here is a link to a site that shows the profiles of all the major brands. Check it out.
Compare car profiles
Fred