I am having a dilemma on deciding what one piece driveline to purchase. I want to get rid of a vibration that truck has at 45-55mph. I have found the OEM one piece for around $620. I have also looked at a one piece from driveshaft specialist for $695 with spicer 1410's and $795 with spicer 1480 u joints. The driveshaft specialist is .125 compared to .094" walls for the OEM. Does anyone know what AAM u joints the OEM uses. I am looking at the 521123220ab. I probably will never turn my smarty over #5 (90hp) Please help me decide wich one. All these prices do not include shipping. $40 for OEM, and $60 for the driveshaft specialits. If I do go with the driveshaft specialist would the 1480 series be worth it or overkill?

I have tried in the past a lot of options in trying to get rid of vibration, including centramatic wheel balancers. I appreciate any input you guys can give me. Thanks