The 98 and later front ends can be mounted on the 93-97 chassis as long as the radiator support is also swapped. To ditch the pop up headlights, you'll need replicas of the '98 SLP firehawk.
You cannot use the 97 hood with the 98 and later front end as the fender lines are different. It's an all or nothing swap. Now if you find an appropriate 98 and later aftermarket custom hood, that is an option. The firehawk headlights never actually made production they were prototypes. There are some replicas floating around the net, but be prepared........ $2K for the set just to start, and that's IF you can find them.
You're probably going to be stuck with the 98 and later fenders, hood, front bumper, lights and radiator support. it's by far the most cost effective swap.
[This message has been edited by Joe 1320 (edited 07-22-2011).]