When I replaced the Speedster script on the side, the new emblems had posts in different locations. I tried several methods to stick it on which eventually failed. So, I used these guys:
https://www.adhesivetemplates.com/
They took my emblem and made the adhesive stuff to fit it. They say they can work with scanned images but I think them working from the actual emblem is better.
In my case, they even picked up and delivered the emblem. They are about 100 miles away. I think the girl wanted to see my car.
I left one post on the emblem to locate it in an old hole.
So far it is sticking well.