What are the best replacement options for front springs on the XKR?

My XKR is a 2003 wearing 20" Jaguar/BBS rims and 255/35 tires up front, so there is not a lot of space in the wheel well. In fact, right now the tires will rub through deep dips due to the worn original springs. Am also replacing the shocks, and already replaced the mounts (yes, should have been done at the same time but the shop convinced me the springs were fine).

Saw that one aftermarket option reduces the ride height, which is likely an issue for me given the roads in the Northeast where the car now resides. Appreciate any insight and recommendations.

 

The lowered springs from Adamesh will probably ride higher then worn out springs. I plan on using them, you can buy OEM springs but I question the quality of them considering other OEM parts available aren't the best. At least with the Adamesh springs they are good quality, you shouldn't rub with them at least as others have used them with the 20" wheels. I think around 20-25mm is a safe amoutn to lower the ride height by.