fellas, i need some advise. i regulary pull a 24ft. gooseneck with tractors, skid steers etc. as well as my 34ft 5er. the 5er is around 12,000 lbs and tractors range from 6,000 lbs to 12,000 lbs depending on attachments. i am looking for a little more power for towing but nothing wild. only mods to date is a 4 in. turbo back and a bhaf. any help will be great. thanks.