Not so quick. While it is generally acceptable to cut coils, it is something that requires great care and can't be done in some situations. While you can cut a Land Cruiser coil, there is more work beyond cutting. Take a look at the top wind of a commercially built spring. They don't just cut the coil and call it good. They bend the top wind to give it a flat surface for mounting and load distribution. Additionally they mill the top surface flat, again for load distribution and mounting clearance.
If you were to just cut a coil, you would end up with a pig-tail sticking up past the rest of the coil that could cause install issues, damage to the spring mount, etc.
The FOR coils does not have a flat seat at the top to start off with.
I asked questions on MUD re the cutting but were not able to get answers. This is what I asked:
"I have a question about cutting the coils. From the last pictures I saw of the FOR springs, the top coils are not touching each other when not installed, but they do when it is installed. So they are only "dead" coils in loaded and compressed state, but when the axle droops they become active. It was said in other threads that this part helps the spring stay seated which is 100% correct, but somewhere it was also stated that this is the part that makes the FOR springs ride so soft.
Since you cut some of this off, does it not change the behavior of the spring? I know that cutting dead coils off will not change the spring behavior, but I always assumed, and might be wrong, that it was dead coils when the are wound to touch each other before loading the springs.
Any coil that is not touching each other is not dead to begin with, but deadens when it compresses to touch. When this happens, the spring rate increases on the spring.
Just to be clear, not saying this is not a good idea or anything like that, I am just asking on the issue of cutting the coil and changing nothing in the behavior of the coil."