Also per same TSB:
NOTE: DAIMLERCHRYSLER CORPORATION DOES NOT RECOMMEND ANY
MODIFICATIONS OR ALTERATIONS TO THE FRAME ASSEMBLY. MODIFICATIONS
OR ALTERATIONS (I. E. , HOLE DRILLING, WELDING, ETC. ) TO THE FRAME
ASSEMBLY ARE THE RESPONSIBILITY OF THE PERSONS PERFORMING THESE
MODIFICATIONS OR ALTERATIONS. ANYONE ALTERING THE FRAME MUST
ASSURE COMPLETE RESPONSIBILITY FOR ASSEMBLY, PERFORMANCE,
RELIABILITY AND COMPLIANCE OF APPLICABLE FMSS REQUIREMENTS.