Take a look at oceanwavesail.com, The data which I observed indicates the absence of spreaders. An excellent website for finding data and information on a broad range of sailboat models.
Here's few more..
1. Summertime Dream (1/4 ton) : Built by choate sailboats(USA) and designed by carl Schumacher .
2. Super Sunfish: Built by choate sailboats(USA) and designed by carl Schumacher.