Transmission crossmember frame extension measurements

[liquidh8]

Hello all, I am wondering if anyone has the dimensions of the driver side crossmember bolt locations for an 82 up g-body. The 78-81 had the DS of the crossmember bolted closer to the front of the car, while the later years had the crossmember farther back for like the 2004r's. I made one for my wagon, but I am looking for the actual measurements so i can fab a new inner frome rail to look like stock in the right location. I can run it wherever as long as the trans center-line is right, but I would like it to look factory

Looking for the 2004r mounting holes like in the below photo from olds power

Thanks