Jacking up truck on dry soil!?

[jeboblasto]

Hey there, i have been trying to find some info about what my options are for doing some suspension work where it's parked, which is on grass/dirt. There's a pretty level spot there and it is packed down pretty good, once it's dried out a bit. I am considering the safety of working on it there, rather than trying to find a shop or paved driveway. Just wanted to know if anybody has experience, any recommendations for this type of scenario. My 67 needs back on the road, been biking all winter. Pouring concrete is not an option, i was leaning in the direction of a concrete rv type pad/block or two. Thanks,