I have been thinking about changing the springs while doing the shocks. Don't know if the 30 year old original spings are past their prime but by changing them now the suspension would be OK. I have no wish to start changing control arms etc. for "better" ones so apart from changing some bushings if needed this is it.
Also, I do not wish to lower the car much, perhaps a bit for "aesthetic reasons". But the usage is cruising in the countryside and perhaps some highway touring.
Judging by the information I googled, the original springs have following specs:
450 lb/in front & 210 lb/in rear
I have been looking at the Ford Performance Parts springs M-5300-B. They appear to be progressive and a tad harder but not that much.
https://performanceparts.ford.com/part/M-5300-B
M-5300-B specs are:
425/530 lb/in front & 200/300 lb/in rear, drop front 0.875", rear 0.5"
As far as I can tell they should go well with the Bilsten B6 struts and shocks. They seem to have received good reviews and comments on Summit site. And they are in stock here.
Any experiences of these Ford springs?