I was reading a couple of your post's about towing.I have got a 2000 lightning.I am going to tow a 4600# travel trailer that is dry weight listed. The tongue weight is 470#.I notice you said you had some type of helper springs.I have equalizer bars for my trailer do you think they will do the job.Or will I need helper springs as well?There was a post earlier in the day some one said the lightnings had more rear leaf springs than a regular F-150. Hope you can help. Thanks. Bob.