Remove badges (using fishing line to get underneath using it as a saw, and goof off with a towel to remove the excess)
install euro sidemarkers (haven't done this, but i assume it's relatively easy)
remove dingy like the above post...may leave marks like he said...but i did this on a 95 GL and it came out perfect except the side which had been repainted due to minor accident
those are the only QUICK mods...but there are more relatively easy ones