Never heard of FK.
However keep in mind with a drop of circa 40mm you will spend about another £1000.00 getting the geometry and ball joint angles sorted out if you fit decent quality correction arms and ball joints.
A link to the springs may help in identifying them.
And also welcome to the forum.
Alex.
to the forum Craig.
I am just up the road in Perth, so if you want to swing buy on your test drive, I would be more than happy to give it the once over for you.
Alex.
Fuel degrades over time so V Power soon becomes 95.
Get wheels off ground to avoid flat spots.
Trickle charger will hook up to the live and earth side of the battery.
Make sure anti freeze is up to strength.
Alex.