'87 GMC coil spring removal.

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I'm putting lowering springs and spindles on my '87 R1500, so I need to remove the old springs/spindles. Here's my dilemma: I'm doing this on a rolling chassis with NO engine/trans/body on it. This chassis WILL be going under my truck once it's completed. That being the case, I can't use the jack under the control arm method to ease tension on the control arms to remove the old springs and install the new ones.

I've scoured the internet looking for another method (I also don't have a torch, so I can't cut the old springs out) but all I find is the jack under the control arm one. I've considered spring compressors, but aren't those kind of scary?

Thank you! -Marc.