Travis: Stock Class Crossmember Rule Interpretation

[SSDiv6]

This one is for Travis or any one who knows:
In the rule book, Section 5A - Stock Cars, Oil Pan, a paragraph in the section reads as follows:

"...Crossmember may be altered for oil pan removal. If altered, all material and strength must be replaced by boxing or installing removable or permanent material"

Has any one done this type of modification to their cars?