As much as I hate to say it, These cars don’t sell for as much as many people think they should. They are awesome cars and very neet. Bring great attention at the shows. The problem is that the parts are very hard to find and the turbo system will for sure have to be rebuilt. They are very rare to find complete but rare don’t make them worth a fortune. Every time I found one a couple years ago then ken Denneson would say it was to much money. Now that I have been around these cars for a while, he was always right.
I am not trying to say don’t buy it because we love ours and are lots of fun but just be carefull with the purchase price. even if it needs a little work you are talking big money. restored price is not likely going to hit $20,000. Without pictures there is no way to give you an opinion on unrestored price but at the same time all the ones I know of that needed some restoration work sold in the $6000 range or less.
I did pay more for ours but it is a rust free original paint car.
Good luck and if you get it post some pictures for us to look at.