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I can't help you out by the casting number, but what does the bell housing bolt pattern look like. For the most part, the FE engines had a round bolt pattern.
Just another guess as I peruse E-bay (item 4502171069)... This is off a 60's truck, more than likely a 65 w/a 352 FE. I do not know what the mounting surface/face of the car toploaders bolt pattern is, but perhaps someone can help out with that. I believe based on my limited knowledge though the top-loader will bolt to this housing...
Yea the Toploaders will bolt up to them, but the truck bell is about 5/8" to 3/4" deeper, and using an 390 specific or a big block Toploader with it will result in the input shaft unsupported by the pilot bearing/bushing, it's extra depth keeps the input from reaching into the rear of the crank. Small block Toploaders will probably be OK with it, but it's best to check first to make sure the input reaches into the pilot bearing.