I just installed Supersprings Supercoils SSC31's on my 2001 E350 Quigley and they're a little more spring than I care for. If you have SSC30's and feel they're not enough, I would be happy to work out a trade.
Re: Trade my new SSC31 coils for your SSC30 coils?
I still have a set of SSC-30's sitting in storage. They were barely used (less than 1000 miles). I live in San Jose, CA. they are ready for someone (anyone) to pick them up!