Info request - 60-66 c10 with 4/6 drops

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Question: Will 15x10 rims with 255/60/15 tires work on our 60-66 trucks with a 4/6 drop?

I tried searching multiple threads here but did not find anything specific to 60-66 year trucks only 73-87.

I picked up a set of Wheel Vintiques 15x10 Rally's without tires for cheap.

Did not have time to verify fitment because it was a great deal being these rims usually run $100-$120 each so I snagged them before someone else bought them.

My truck is in pieces so I cannot verify for myself which is why I am asking here before I go out and buy tires.

Anyone running 15x10's with a 4/6 drop?

Thanks guys