I have a 1975 Direct Connection catalog and these heads [ Direct Connection / Mullen ] heads are offered in the book !!
1976 the W2 was released so these were the last Oem [Mullin] offerings and that in itself makes these very unique.
I have reference to W-2 heads as early as May ‘73. They might not have been released for sale to general public. But seems like they were ready and waiting.
By March 29, 1975 Mullen is testing “W-3” heads. That was after a “W-2 1/2”. Haven’t found a reference to W-4... yet.
Could the ported 360 be a class deal requiring production castings? Or/and a more economical head using production valve gear to sell in DC catalog to hot street and bracket racers?
