Yep. Turns out there were two, but it replaced the E0TZ version:
80/82 F—U100/350 "Before 1/82" ÿ EOTZ 17508-B WM-384-#E0TF 17504-AC-includes 17A436 output arm - r/b E2TZ 17508-A (11/82)
82/86 F—U100/350 "From 1/82" E2TZ 17508-A WM-388 #E2TF 17504-AB-includes 17A436 output arm
Gary, AKA "Gary fellow":
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Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI