TW pics look like a square beam in the throat with wee bit thicker and rounded beam at the tip of the head.
SW of 309 is too low but can be fixed.
It is kind of like the old box beam tfight 320 prior to the vo2 oval beam version. But, 18x20 is new and thicker head tip is new. Also, it's similar to the old dunlop 300t in shape of mold but I didn't think the dunlop played anything like the old TF 320.
Might be worth a demo.