225 Slant 6 to 3.9 V6 conversion?

No it's a 5.2 (318 ) minus two cylinders, it has a 3.91" bore and a 3.31" stroke same as the 5.2(318 ). If it was based of the same bore and stoke numbers as the 5.9 (360) it would be a 4.4l v6 (5.9/ 8*6 =4.4, 5.2/8*6 =3.9).