I ordered a HD-2 and beast sun shell last night, so they are on the way.
I have the ATSG book and I have the pump remover/installer tool and the output shaft holder. I have been trying to collect 4L60e tools from eBay in anticipation of one day doing one of these.
If I get in and decide to do a complete rebuild I will find the other tools.
What about a Sonnax super hold 4th servo? worth it? Can get one for around $60 looks like.