^^^

you could make one. you can buy a sheed of gasket paper and just cut out some. probably wouldn't be that hard especially if you had one to use as a template.

 

What he said. I've made some from thin cork gasket material that worked fine. You can get it at any auto parts store. It doesn't have to be the exact shape of the OEM one. Just make sure it keeps the upper strut mount from rubbing the chassis.