This is purely subjective but you have to evaluate what 'worth it' means. If you got the truck dirt cheap and factor in how much you'd be prepared to spend on a cleaner truck and split the difference, you have a figure on what makes the fix up viable. If it's to flip the truck, there's no money in restoring cars unless it's so rare that you can afford to invest the resources (I'd bet at least 80% of 'restored/modded' cars that are being flipped have some nasty ghetto botch work done to them). If it's an emotional investment (the truck belonged to a close family member or it's something you grew up with etc) then what you get out of it is what you put into it. Skills and time wins over towing and workshop hours. This gets asked a lot and there isn't a right answer, but you will find that all of the members here aren't pulling out receipt books and bragging about how much cash they think their truck is worth.