Yes, someone has. Or
is. Me. In Big Blue. And, Bill/85lebaront2 has done it to Darth.
If you are a glutton for punishment you can read all about it, and LOT'S more, in
Big Blue's Transformation, which is now to 78 pages and growing steadily. Or, I can give you the info in a nut shell and you can ask questions of Bill and/or me.
But first, you said you bought a '97 F250, presumably with the 460. And you said it has overdrive. Is that an auto with OD? Or manual? If auto it'll be the E4OD. If manual it'll be the ZF5. However, the big question is what ECU yours has - EEC-IV or EEC-V? The IV will be bank-fire and no mass air flow sensor, and that looks to be what you have, although Bill can probably answer the question just by looking at your first pic. I ask because both he and I are using EEC-V with sequential injection and a mass air flow sensor. So our wiring will be slightly different from yours, assuming yours is EEC-IV.
Anyway, Bill is running an E4OD in Darth and I'll be running a ZF5 in Big Blue. The EFI 460's have completely different intake and exhaust manifolds from the carb'd engines as the ports in the heads are different. So you'll want to swap everything into your Bullnose.
Or, you can convert the '97 to Bullnose fenders and bed, but leave the interior with the later dash. It'll look like a Bull, but will take less effort.
Gary, AKA "Gary fellow":
Profile
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