The engine in the Mustang 2109
Fitment for the Mustang 2109 centres on the Perkins 1104D-E44TA: 4.4L / 268 cu in, 4-cyl inline, 105 x 127 mm bore x stroke, about @ 2200 rpm, Tier 3. Serial number on the block settles the exact version. New-surplus and rebuilt stock ships from Houston.