Finally got them on. Drivers side had to grind a corner of the boss on the block below #7 & a little more off of the ears of the trans,cut 1/4 inch off of the front side of the rear lower control arm mount & bottom of control arm where it mounts.Pass side used a rosebud to slighty flatten one tube,pretty sure it will hit when the engine torques over.Now on to my fuel tank pickup & pump.What is the P/N of those headers?