93 Dodge Dakota 8.25 Gear Swap

I have a 93 Dodge Dakota with a factory 8.25 rear with 3.55 gears. I would like to swap the gears to 4.10 or 4.56.... would go with 4.30 but not sure if they make 4.30 for a 8.25 rear. My question is what am I looking at price wise if I was to have this done?? Just a gear swap. Im located about 40 miles west of Cleveland so if somebody knows a good shop let me know... I have changed the center sections in a 8.75 rear before but have never messed with a 8.25 rear before. I have read these can be hard to change gears... have to set them up properly etc... Not sure I have the knowledge to do that correctly. Any help would be greatly appreciated. I would pay to have it done just want a idea on the costs.