Well, I'm confused.
The guys pointed out that I don't know how to count gear teeth, but I don't think I'm color blind. Below are two snippets from the MPC, with the one on the left being the universal drive gear chart and the one on the right the specific chart for 1980. And both of them say that an E0TZ 17285-C should be blue. But it should have 7 teeth. How many does that one have? What color is it?
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