Engine is a direct swap, although at the very least, you should consider installing:
1. Your intake manifold from your Caprice....the '93 intake isn't compatable with your fuel rails;
2. A mild performance cam that's more appropriate for a 4200 LB B-body (I recommend the Comp Cams 501 or, if you can find one, a Crane 227 cam);
3. Use your current accessories and brackets;
4. Don't bother with the transmission......I'm pretty certain the 93's had the 4L60 (not a 4L60e) and not worth the hassle if installing.
KW