I think the rule of thumbs (IMO) is, if you have to seek opinion from a public forum in deciding whether YOU should do something..the answer should probably be NO. This is magnified when it comes to a modded vehicle in which the variables are much higher.

Keep in mind, 90% of modded/built cars that's for sale, is a "steal" because the seller always take a lost on majority of the mod they put into the car. so take it for what's it's worth. the market dictate a low price for a reason...