Didn't end up using garnet on the block. However, I did use it on the steel fuel tank because it did have rust in some places (mostly underneath the tank) and I found trying to remove rust with soda unsuccessful. Did notice garnet getting trapped between the mounting bracket and the tank.

Just ended up purchasing the dupli color engine primer (really happy with the Chevrolet orange, it is nice and a close match to the original paint color); rather than using the hichem. I'll keep my eye out for the VHT though, next time I am at Repco or Autobarn. Going to layer on the primer and sand back until some of that pitting is filled. Looks like they used epoxy to seal the two halves of the tank where they rolled the edges over. Might fill the tank with vinegar to see if there are any leaks before commencing.

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