Firstly,
to FSM Mate!
I don't know of any
'conversion plans' per se, but there's a few conversion articles on the web. I've collected some stuff, and here's a few bits that may help.
The first is Tamiya's 350th Yamoto to Shinano, the sites Japanese, but has an English translation, and unfortunately its only model photos:
http://homepage3.nifty.com/seasky/BiShinano1.htm
Doyusha builds a 1:250 scale Shinano. Maybe getting a photo copy of the instruction sheet off the owner may help as a subsitute for conversion plans. You u can use some ideas off these Review Article's & Model Photo's:
http://www.steelnavy.com/DoyushaShinanoBW.htm
http://steelnavy.com/DoyushaShinanoConBW.htm
http://www.modelshipgallery.com/gallery/cv/ijn/shinano-250-jc/Shinano-index.html
I know someone is converting the Nichimo 1:200 Yamoto to Shinano, but can't find their web address.
Some of these guys like Steel Navy's Bill Waldorf says he is happy to help, so u could email him directly as his email address is supplied.
Also very little real-life reference photos exist. Dont use Tamiyas 1/700 scale Shinano as a basis for your conversion because I think there are some minor inaccurate bow & flightdeck stuff (dont quote me on that
). Seeing that you have a 2nd-hand kit, and some of it may be partly built or even it might have lost parts, some scratch-building & kit-bashing may be needed.
Anyway, Good Luck
- and keep us posted of any plans and how your Shinano is going!