Zoheito or Murata Blade

[DTM72]

I am attempting to do something rarely ever works, but I have a nice kyu-gunto koshirae that needs a tsunagi. Rather than have a nice one made of wood, I would like to attempt to find a zoheito or murata blade, as I suspect this is what was in it originally. I would prefer a decent blade with little to no rust/staining. I used another wood tsunagi that goes to a different sword to gage what will work. Dimensions of what I am looking for can be found below.

 

Nagasa : 24" - 25" (61-63.5 cm)

Width at hamachi : 1-1/16" (27mm)

Width at yokote  : 3/4" (19mm)

Thickness at hamachi : 1/4" (6.4mm)

Thickness at yokote : 3/16" (5mm)

Sori : 5/8" (15.5mm)

 

Thanks in advance!

Dan