Stainless is a little heavier and often more brittle depending on grade. The quality of the welds and fillers used is actually more important regarding cracking. Coating SS is nice but also more expensive. I'd love SS ceramic coated headers, but I don't have $800+ to spend on headers. I could potentially have a full header to tailpipe system for the same price. A 16 ga steel ceramic coated (in/out) long tube header will last longer than most of us will have our Marks. I'm really not that concerned with a little surface rust a few years down the road on a motor that I won't ever really see the headers anyhow. I want performance, quality, and a good price. Thats what I have here. I just need to know who else wants these. We have until August to gather the funds. At least 20 people, maybe up to 25. The more the better. After the first run, they are willing to do smaller batches for people who want to purchase down the road. Although, if we don't have the first 20+, we'll never get this started. Just to catch everyone up; 16ga steel, polished ceramic coated in/out(guarenteed for 3 years), 1 5/8 dia., full length (4 into 1), all stock connnectors in place(egr,ect), perfect fit.