HG 1/144 F3000 Super Custom Gouf Custom is a custom build found on blog-tagimi.net (View HERE)
Core kits used are the the following:
HG 1/144 GPB-06F Super Custom Zaku F2000 (Already Released, Price: 2310 Yen)
HG 1/144 MS-07B-3 Gouf Custom (Already Released, Price: 1600 Yen)