Quadralink measurements with Fab 9"

[bluespeedball]

Ok guys, I will fully accept any and all "roasting" that I will get from this question. I have tried to search for my answer but dont know how to word it.

So, 1969 Camaro that has always had a GM 12 bolt from the factory. Just recently scored a Currie 9" that I will be installing the DSE Quadralink brackets onto. The kit came with instructions showing proper bracket locations to be welded.

My question is that with my former GM 12 bolt that the pinion is center of the axle and obviously the Fab 9 is offset. I have to have it narrowed for my application and unsure of how it should be done.

First, how is a factory 9" installed in regards to pinion shaft offset? Is the housing centered and the drive shaft angled toward the pinion shaft? This doesn't seem like it would be the answer due to the drive shaft not being inline with the transmission. Is the housing offset and the axles narrowed a different length on either side so that the pinion shaft is centered like the GM 12 bolt?

I feel like an idiot for asking this question but I have 0 experience with a Ford 9" or variation thereof. Thanks guys!