I know of one for sale locally, asking $55,000.
Is this a Superformance for sale at $55K, or a different make? If it's an SPF, pls PM with some details. I have a friend in B.C. who's looking for one and this might be of interest to him.
You can build a Factory Five for significantly less....
Yes, no, maybe so.
This totally depends on what kind of build you have planned, which options you go for, how many new (vs used) parts you use, how many tools you need to buy, which tasks you can handle yourself (fabricating, electrical, mechanical/engine work, body prep and paint, etc.) and which you need to outsource, etc.
I made a spreadsheet comparing SPF to FFR (built to my desired spec) and the cost difference was much less than you'd think. And that was figuring my labour for free.
The truth is most guys who build or restore cars don't really wanna know the true total cost of their cars. It's a hobby and they do it for fun.