I think the heated ones are actually later than the unheated design that is most commonly seen. I recall reading that on the HAMB. I can only speculate why we only get the unheated ones as repops these days.
The heated design came in a 216 bolt pattern and a 235 bolt pattern to mate to the intake manifold. I have a set of each as well as unheated ones, though the 235 sized ones are going to a new home next week.
I'm curious to know what they're asking too. I see them posted in the $800-$1200 range when they show up, though obviously I don't know what they actually go for on FB or eBay when there's a best offer. (I got a REALLY good deal on my 235 set, so the friend who's buying them is also getting a good deal.)
