i'm new to the auto trans..if they ever figure out whats wrong with my p-700,rattling noise ; i'll be putting tires and rims on it.27 mudlites or 589's on c-series.mainly mud,trail use.my question is what is the best all around spring or springcombo to go with.their seem to be so many, its' alittle confusing.still have a rattle in the motor when revved to about 2000 rpms...any ideas??thanks

 

You will want the EPI Black secondary or equivent for sure.