8" lift coil experience?

I have read about this in the past and a fellow er mentioned it to me as well. For those of you who have or have seen 8" lift coils in action, do they tend to bow? Would using 6.5" coils in conjunction with spacers be a better method to reach my objective..or do I then have to worry about dropping a coil? TIA

XJguy

I run a 6.5 spring with 1.75 spacer and no problems. The springs slide down the bump stop tower when I stretch it out but it goes right back in. I would think an eight inch spring would act similar.