Ok, thank you everyone for the input (please don't stop all the input is appreciated), so my opinion is that the SRT springs, which I would have to cut to get the ride height I want, are a hassle. I'm trying to achieve the stance I want with no cutting.

As for cornering my interest is not in track times or cornering quality, as most of my driving is interstate or city driving at <45 MPH and I tend to corner at <20 MPH.

I am modding my XF for the drag strip and am upgrading springs simply to please myself when I look at the car, I hate seeing wheel gap on ANY vehicle.

Vinnie, thanks for shooting me a price. If I do go through you for this purchase I am going to need some detailed instructions and timely delivery. I'm not trying to bag on you or your company but from my research you may have/had some problems in these two areas before.