FDNY had two rescue-style rigs from ALF with essentially the same cab. The first was registration #AR8201, which was assigned to Rescue 2 from Feb 1983 until Jun 1991. It was then rebuilt by Saulsbury, with a Mack MR chassis. The second was registration #AH8301, which was originally assigned as HazMat 1, then converted into a collapse rescue (assigned to R3), then rebuilt by the shops into a spare rescue during 1995.
The two rigs could be distinguished because the '82 (R2's rig) had 2 forward sloping windows on the officer's side and one window on the driver's side, all near the top of the main rescue body, and no side entrance door(s). The '83 rig had no windows in the rescue body, but had a crew entrance door on the officer's side at the very front of the box. The 1st & 3rd photos above appear to be the '83, while the center one appears to be the '82. You can see the crew entrance door on the '83 in the photo in kfd274's link.