I'm going to get a set for my install in December (using the Tejas motor and transmission mount). I've emailed Speed and got a response very quickly (some would say... "speedy").
Not sure yet on whether to go with the shorty headers or the long headers. Shorty has v-band and I am installing in a C10 longbed... and maybe could repurpose them for a turbo install later. However, long headers might be better overall/top end, are closer to equal length, look fancy... and I may never go turbo and should just forget about pipe dreams.
Decisions, decisions.