We have purchased two hoods from AMD with minor issues but turned out fine. Shaker Hood company I think they are in Oregon, has complete Shaker parts kits, great quality, but you'll pay for it. They have multiple kits for every engine 340 and up. If you have A/C you'll need a special compressor...
Try Bill in NJ. Does a lot of wiper parts: motors/ switches. Very knowledgeable, friendly and may have the specs you need?
Name] Bill Meerholz
[Mobile] +1 973-839-1001
[Home] 114 Mountain Ave
Pompton Plains, New Jersey 07444
Just had my 340 done by Jasper engine works. They do an amazing job and document everything, all steps from Disassembly to Dyno. They have a separate division called Historic (?), and a guy named Darren runs the division. Cost: 7K
Change to Rally Insurance after many years at Condon and Skelly. Found them to have much lower premiums, and higher stated values. Just did this, so no track record... SM
Sure glad I went up to photo those cylinders, they had the pins and clips in them. I think they are the same one used in the power cylinders?
Here are the pics of the assist cylinders, they remind me of what you would find on a screen door.
Really appreciate your help. Steve