I have the Amsoil dual bypass on my 1995 Dodge. Now that it is done, I think I would just run the single bypass that they use on the later models. The dual bypass was harder to find a safe place to mount and I think I would rather keep the stock filter intact if I were going to do it again. You can take oil from the second port on top of the stock filter mount and drain into one of the valve covers or into the oil filler. I also had some leak problems to begin with, but that was probably from my plumbing skills. The Amsoil bypass systems aren't too badly priced if you buy a 1 year membership and since you are going to buy their oil anyway it would be a savings. They do come with great instructions and you can talk to someone on the phone if you have questions.
Archie