Rebuilding the front end on my straight axle nova in the myriad of parts and kits I bought most came with those kind of springs (here we call 'em boat trailer springs). They were three leafs with a large arch, and short in length. I used (and prefered) the five leaf-longer length Speedway set that was engineered for a car...
removed a set of trailer springs that another shop had installed, 400+ lbs of bodies could not bounce it 1 inch. Way too stiff, Speedway springs work great
The Jalopy Journal
