[Wbulk]

I have looked at QA-1s chart to. With a straight axle you have limited travel, not like a regular car that the chart is for. If you are rubbing now you will rub with the real light ones. Summit has the springs the cheapest.
My car came with 10-185s. I have 1 1/2" of travel and was hitting the bump stops regularly. Weight is an issue. I weigh 250 so I went to 10- 225. The ride was good by still hit the bump stops sometimes on city streets. I then went to 10-275s. The ride is not quit as good but this works pretty good. The cars corners better. If this is just for street use their are other less expensive QA-1 options.

Interesting that for solid axle cars Shell Valley, Lone Star, and B@B come with lighter springs. While FF and Hurricane come with heavy springs in the rear. I called Hurricane just to see the rational and was told that's what the original company supplied, but they would give you what you wanted. My gut feeling is it's just to keep from rubbing as they don't have bump stops.