I think it'd be possible without actual grafting, just need to drill the earlier fenders for the grill mount bolts and do some creative fudging - look at your 57 fenders, there's only one bolt hole on each fender at the side of the grill opening, those holes and the flat spots won't be on the earlier ones

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot