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That PN 8663548 is for a 700R4, so you should be good for the swap.
So if you get another 700, get one that's the same year as your truck or up to 1990 or 91 I believe, anything before that isn't worth it.
Or have yours rebuilt, your in the good year range of the 700's when GM fixed the parts that made them crap in the prior years.
dont get the 4l60 and 4l60e confused. the 4l60 is pretty much the 700r4 but with upgraded parts the 4l60e is electronically shifted so you have a lack of the tv cable. i want to say in 88 they changed the name from 700r4 to 4l60 some say due to the bad rap the 700 got others say gm changed all their transmissions nomenclature