5.7 vortec heads are the interchangeable with other GM engines?

So I have 2 cracked heads on  5.7 vortec on .y chevy tahoe.  
So my question is this are there any heads that are
interchangeable that I can use on my Chevy it's on my
Chevy because I'm on a major budget I found a couple
online in my local area for pretty cheap or an engine out of
a 1993 Cadillac Cadillac there's also some heads that are
193 castings I was just curious to know if there's any that I
can  Could use that aren't the same casting number