I reckon solid mounts (hasport) + cai (injen) + coilovers (alot) are the three best mods for the dc5.

The mounts for more feeling and the vibrations are cool. After sitting on trains, riding in Daily's.. When I jump in my car every weekend to just drive it out to wash it. The rattles feel good(dunno why). The injen cai for really waking the engine up, and finally a coilover setup for looks as well as handling.