KYB shocks?

Could be why they blew out. If your suspension is soft or the springs are sacked out, the firmest setting could have been compensating for that and prematurely work them out.

For a rebuild the link was just one place. I would shop them out and see.

KONI NA | Locator

The car has 27k original miles, the rear seems to sag a tad based on other swingers I have seen. I have thought about adding helper springs back there, what would you recommend? I'm looking to keep the ride as stock feeling as possible for the most part.

Rebuilding the Koni's is growing on me, I will call a few local shops tomorrow and get some quotes.

thanks again,