hmm what a silly question dude..
It all comes down to what you really want the car to do and how much you want to spend on it.. Clearly you have not researched what you want to do with the car..
Why dont you give us more details in what you actually want to acheive.. But if you want to know what mods will be best etc etc, i suggest you search.. Been covered!!
But to answer your question, yes its worth it.. Then again, doing any modifications to any car is worth it.. But the vaule of the car can also decrease dramistically!!!
"Research dude" esp if you want to mod your car, you need to know which workshops are best around your area and sofourth etc etc etc..
Hope that helps a little..