My understanding is that Methyl Hydrate is another term for Methanol (?) In Canada we are able to buy Methy Hydrate in a 99.9% pure form for about $7/Gallon (CDN).
That is all I have been using with my kit from Julio and it works great. I was able to run 116mph with Sunoco 94 and alky with no knock at about 27-28psi. This was with an unopened motor. I would have like to push her harder but that was all my little 7-year old TA60 could muster........
As an aside, another GN owner on this board went 122 with an unopened motor, 94 octane and Methy Hydrate in Razor's kit........
In Canada, it's cheap, easy and it works !!!