Congratulations on sticking with the project and restoring one of these rare cars. You've inspired me to start a Hammer registry.
http://www.peachparts.com/shopforum/mercedes-benz-performance-paddock/266098-w124-amg-hammer-registry.html#post2346270
If you have any additional data please let me know. Thanks.

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1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)