They are designed pretty stout and can take a lot of abuse. I've found traction problems happening if things get tough. They have no trouble pulling a plow through tough soil, I think you'll be okay with what you mentioned. I would be sure you have the correct length mounting bolts, assuring a proper connection to the transmission case. I've seen them mounted with the original cover bolts, which are now too short for proper strength.
Good luck!
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David
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