OpenThrottle

Hey guys, I am new to this forum, but not new to the mustang world. I currently have three Mustangs. A 2000 V6 5-speed, a 1996 Cobra Vert, and a newly purchased 1990 2.3L 4cyl automatic. I got the foxbody for super cheap, mainly because it has a transmission that has lost forward and reverse gears. I am perusing for another A4LD, but they seem harder to come by. There is someone local that is selling a 4r70w from a 1998 V6, and I was wondering if I could somehow get that in the Fox, or if there was an adapter or something to make it easier to use. Any information helps. Thanks.