not sure on the del-sol fit, but here's a recipe for your bolts to NOT snap. I just swapped out my rear drums on my little michigan rust bucket.

For about two weeks before I took a wrench to the car I jacked the back up once a day and shot some PB on every bolt I needed to pull off including the end of the hard brake line on the inside of the fender. When it came time to swap, I heated the bolts up with a torch till the rubber bushings started to smoke. be CAREFULL, there's a LOT of flammable rubber down there. Even the lower arm bolt came out after a about 10 minutes of love with an impact wrench on low setting.

I used PB, I've also heard Beaver works well, just ask the auto parts store guy.