Johnson offer exotics like elk and bison?Most Western clothing patterns are based off the 5'10" model and Asian ones are based off the 5'8" model. But you work out a lot so that is the challenging part for fit. Every off rack Large will need tailoring at the waist.
Shawn copied the 2mm horsehide because of Y2. The first prototype was a car coat just like Y2. The second trucker is mine. Shawn doesn't have Y2's different trucker styles though. Levis Type 1 and 2. Shawn only has the type 3.
I didn't want to name the names but yes, both Goodwear and Greg Field offer best bang for buck for Shinki. But they are both LONG wait. Simmonsbilt also offers "Japanese horsehide" but they don't say if it's Shinki or not. I think it is. They also have Type 3 trucker pattern, and they do custom, and they are hated here for many reasons. I just think their sizing can be tricky, I had hit and miss with them so buyer beware.
If you like thick leather truckers I got some cooking at Johnson. Will post pics when I get them. They are not Shinki, but they got 5oz US made goatskins and deer/elk/bison for reasonable prices. Not as good resale on eBay as it seems but they cost a lot less than Himel or the brands from Japan. There is a Johnson leather thread here worth checking out. Although the new YahTaHey beast just smashed everything into the ground.