Yeah, the M1 looks like it has the whole neck, the 54 just has enough. I actually could have got the 89 at the same time I snagged the 54, it was a tough call as I could only get 1, but 54 is my 2nd favorite G suit so I went that route. I'd also been after it for years. That's the fun of G collecting too, you hear of pieces well after they sell out and really hunt after them which makes finally getting them tha much more rewarding. I watched auctions for the 84 Kaiyodo for years that were like $300 and finally found one for less than $100. Same with the 54 bust, most auctions wanted $800 or higher and I got it for half.