Over the years I have seen several cars with the rear fenders burped out a bit like the car of the month.

How is that done and how do you get both sides the same?

Adoman did a great thread on how he pushed his out. Sometimes they cut and add extra metal but usually not.

You can actually buy a tool to do it from body shop supply stores or do the shade tree method whis is to work it with a baseball bat or some other cylinder that can be put between the tire and inner fender. Do a search on rolling your fenders...

Given the car is a 914 and they are known to have funky dimensional control, I would use the distance between the tire and the outer fender as the measure for getting it the same. If you use the inner wall they could have been different measures before you start...

Making fenders match. That's funny. Well, you work the metal and then you measure and you do it again and again and again, and you invite your neighbor over for some advice and you drink a beer and you think about how it ought to work and you hope the metal doesn't fatigue before you get the shape and you weld in some more metal.

And you give up and hire someone else to do it and they make you hand over a larger amount of money than you want to spend and they do a reasonable job. Maybe not perfect, but since you are worn out, you go on to the next project.

And the people who look at it , don't ever notice that its off by a fraction of an inch. Every time you look at it you see ever flaw.

You should try it! Its fun and rewarding

answer found: John Kelly school of fender flaring....