Old Thread but I found it so I'm sure other people will happen across it too.
The 58 and 60s have different dimensions in the wings but most of the dimensions are pretty similar.
Note: I don't own either model. The following numbers are the result of internet research and a blueprint I've purchased from EBay, which I believe to be accurate. Don't take any of this as gospel but hopefully this will get people going.
If you're dead set on a historically accurate repro.. buy a template.
The neck is standard gibson.
You should pick neck dimensions (width, thickness) that you prefer though IMHO.. unless it's more important to be historically accurate.
These are my notes.. sorry if the formatting is a bit rough here.
I've typed out all my notes and some are a bit jumbled.
1.6875" at nut
12.375" at 12th fret.. width 2.062"
17.805" at 22nd fret.. width 2.226"
60s neck
Peghead Pitch: 17 degrees
Thickness at 1st Fret: 0.800
Thickness at 12th Fret: 0.850
Heel Length: 0.625
Neck Joint Location: 17th fret
Fingerboard Species: Ebony
Scale Length: 24 3/4 in.
Total Length: 18.062
Number of Frets: 22
Nut Width: 1.687 in.
Width at 12th Fret: 2.260 in.
17 5/16" truss rod channel
Fret markers should be at least .05" thick.. 1.3mm
NECK: <-- '58? doh!! didn't make a note!
Headstock
7" tip to nut
Scale length
24.75"
Fretboard length
17.8" from nut to 22nd fret. board should be ~18"
Fretboard Width
1 11/16" at nut
2 1/4" at 22nd fret
BODY: <-- '58 V
Centerline Length
11 1/4" from the crotch of the V to the point where the upper curves end
Width of body at shoulders (by neck).. where the curves turn into the outside strait length of the wings.
4 25/32"
Curve radius for wings and crotch
1" radius (they follow contour of a 2" diameter circle)
Outside Length of wings
19" flat.. from the start of the curves
Height of wing, from centerline to the topmost or bottom most point of wings.
8 11/32"
thickness of body
1 3/4" (I'd verify this if I were you)
The 68 body is more pointy. The radius of the curve at the end of the wings and at the Crotch follow a 1 1/2" DIAMETER circle. I print some up off my computer (Adobe Illustrator) and trace them on the body. I've got my router template on order though so I'll just trace that when I get it.
I hope all of this helps.. at least gets you started.