If you have to ask, you probably will get sticker shock. You've had the car for 40 yrs, time to repay it and get it done. Ask your local machine shop their hourly wage for work and an average time for rebuilds, that will give you a clue to the costs of labor alone. Find a body shop and ask their times. Paint can go from $5000 upward. If you can do any yourself will save you big bucks. Took me 4 months to rebuild a 53 Jag engine, transmission and carbs for about $1500 in parts. The owner had his car painted, after he bead blasted and still cost $5000. Goood luck. I did not charge him labor as he had invested approx. $8000 in his engine by a shop that did not know Jaguars. Luckily the machining where needed was done properly. They did not reseal joints correctly, so engine had to be gone over. They did not even hone cylinders. So, beware and find a proper shop if you head in that direction.