I just bought a 1997 F-350 7.3 psd single cab 4x4 auto. The truck has 60,000 on it. an old lady from passadina owned it. I'am new to the garage and would like know about which chip is best for this truck, a superchip, or a dp tuner or another brand that someone has had in their truck. also what are the pros and cons of each chip. or is there really a differance between any of the chips out there. can wait to get into the diesel power of this engine. Thanks for any help.