Caltracs are they worth it?

So I was thinking about getting my truck to hook before I worried about throwing money at the motor and wondered were Caltracs really worth the the money? If so do they work better with monoleafs or will standard leafs work fine? Not really sure about this stuff I always just street raced when I was younger so I have no knowledge of this stuff. Questions regarding a 4200# truck obviously most of the weight is over the front end.