Thanks all,
I figured stitch welds would be fine as there will be way more surface area than the spot welds the factory used.
If this car was going to be a race only car I'd do the self tapping screws too. It'd be nice to have that kind of access to the shift linkages. But this will be a street car that may see rain, and will have carpet over the hump anyhow, so it is going to get welded and sealed up real good.
What about undercoating over the self etching primer. Is that ok? Or should I use some sort of paint over it first? Or should I post that question over in the body work section?
Thanks,
Chris E.