Just wondering, I have a 1970 R/T 440 auto Challenger, and it does have torque boxes both in front and rear, so is this a standard factory weld in for an R/T 440-4bbl or does it have these boxes due to the fact its optioned with the A36 Performance axle package, that is included: 3.55 SG in 8 3/4, heavy duty suspensioin (hemi suspension) and max cooling package.