4" Leaf Springs needed other than Alcan

[47thriftmaster]

Hello all,
Here is the story, I tried to order some springs from Alcan. Filled out their form, let them know that due to my location at the moment I could not call them and would need to do it by email. I got an email with a quote and was asked to call. I emailed back explaining I can't call and would like to order now so they would arrive about the same time I do. I wrote a long note on how the truck will be used and what will be in it. Well I never heard back, emailed again still no reply. So as much as I would have liked their springs, I'm going with someone else. Is there another company comparable to Alcan, that makes a 4" lift spring for our Blazers? Been looking but most seem to go with Skyjacker, which I don't mind, but I will have a heavy engine in the front and want something built to handle that and still drive good. Any help is much appreciated.