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I have Rev9 coilovers on my 2001 GT.  I have 0 pre-load, which helps, but they're still a little bouncy and harsh no matter what I set the damper setting to.   I have ZZP coilovers on the red car and, while not perfect, they are much better. I'm trying to figure out what spring rate they are or if anyone knows what I should swap them out for? I'm also going to grab more collars so I can lock them together.  They keep coming loose.  They have a thin lock washer, but one of them broke.

your biggest issue, I think will be the lack of a cam position sensor on a 3.1 and potentially lack of secondary crank sensor (if the 3100 has that, I'm not sure). I'm sure you don't care about things like o2 sensors and the like so I'm trying to think of things that would prevent it from just working. is a 3100 a MAF car? if it is are you even running a maf? not that I think it would matter as you could just slap that in line on a 3.1.  Transmission control might be a problem, but again not sure how much you care about that since you'd probably just be using first and reverse Not sure how a 3100 PCM would cope with the lack of cam sensor signal, its possible that it would work. Truth be told the stock engine harness in that car is pretty darn close to a stand alone system. I've also seen derby guys use modified 3.1 intake manifolds with a carb base welded on and a distributor out of a 3.1 U van if you really wanted to keep it simple

So I have a simplified harness and tuned computer for a 3100 what does it take to make it work on the 3.1 motor? I derby the cars so not really concerned about how it looks or if I have to cut things up, trying to build a 93 lumina with the 3.1 my harness and computer is off of a 98. 3100 Monte Carlo. It’s the lmmf harness and computer I was told all I had to do was swap injector harness over for it to work.. anyone that could help would be greatly appreciated 

I think I watched a guy on YouTube do one, and he used a claw hammer. 

Getting a pry bar on the studs is next to impossible, given the space you're working with. The service manual for the car calls for a specialty tool literally no one sells. You have to make it yourself. Hope you know how to weld. And grooves to lock it in place? Bolts not work for the engineer? Did narrow wrenches and short sockets not exist in the 90's? The idiocracy of the design choices in the W-Body is astounding! Honda out there making cheap, easy to work on commuters in the 90's while GM was living in their own little city of dreams. Hollow, dim-headed loonies, the lot of them were.