914 Restoration questions, How much would this cost? Options

[Gplracer]

I have an opportunity to buy the 914 that I grew up with as a kid. My father sold it while I was in college. The owner repaired a dented fender and repainted the entire car. He put in on a carport with a cover and never did anything else. The carport is open but it has a concrete floor. This was 35 years ago. The car did not have hardly any rust. It has only 78K original miles. It is a 1973 1.7L. The interior is in really good shape. The car will need to have the tired engine rebuilt. It will also need new brakes and tires at a minimum. The car was running when it was parked but the engine had become weak.

My question is what kind of cost do you think I am looking at to get this up and running? I would like a reliable engine with a little more power. I realize you have not seen the car and there are always extra costs. I would have someone do the engine work. I can probably do the brakes. I have restored some bikes but never a car.