I've never tried it, but just a thought. The 7.3 doesn't really fit the '97 body, wondering out loud if it'd be even tighter on a bumpside ? I'd think a 460 donor chasis might be easier yet ? Just thinking out loud, good luck !!!
'67 Fairlane, '79 F-100 2wd shorty, (2)'79 F-150 4X4 shorty, '79 CrewCab 4X4 shorty, '79 E-250 4X4, '91 E-150 Party van, '94 Civic, '94 21' Eliminator Daytona (547cu BBF, 8-71, 1050hp), '97 F-350 PSD 4X4 CrewCab, 99 Ranger 4X4