72 K10 LS Swap Transmission X-member

[CRM1972]

I’m completing an LS Swap in my 72 K10 and struggling with the transmission crossmember. The LQ4 sits on a Dirty Dingo 4X4 crossmember mount and is mated to a 4L60E with a NP 241C passenger drop transfer case. The transmission crossmember is out of a ‘90 Suburban (GM 15548905) and I can’t make it fit. I’m hesitant to hog out holes 2x the bolt size to make it ‘work’. This is supposed to be the bolt in solution. Does anyone have install pics or advise for making this work? I prefer a factory look, but I’m ready to grab the welder and make my own.

Thanks in advance.