Maybe, but don't count on it. Some crystals are interchangeable between radio brands (i don't have the info on which).
If you're going from AM to FM, then no.

I recently bought a new radio, here are the ones i was looking at:

Hitek SRX or CRX
Futaba 3PM
Airtronics MX3
JR XS3 (Synth version of the XR3)

These are all nice FM computer radios with similar features. The Futaba is probably the most programmable. They all have a synthesized version or upgrade(no need for crystals) for more money.

Any one of these should be a great upgrade for your evader.

Personally i got the JR XS3 so i could forget about crystals. It's a nice radio and i'm quite happy with it.