ok you are talking about autoXing this car, but are you trying to be competitive? you first need to look at the rules and figure out what class you are trying to run in. changing the suspension to full coilovers would either require major reinforcement or perhaps even rebuilding in tube frame. if you have the time and money go ahead, but dont forget that this type of modification is going to probably put you in the same class as the highest end cars. you might be the fastest honda on the autoX course, but you wont be in the same classing and you will be instead running with full custom built autoXers that make you look bad.
how much autoX experience do you have? its important to learn to drive a slow car quickly, instead of learning to drive a fast car and not run it off the course. gradually building up your car has many benefits VS completely overhauling your car to what you THINK will make it better. perhaps you would spend all the time and money to build your full coilover setup, and someone in a normal suspension 1g CRX comes along and waxes your times with it. how upset would you be then? then you would have butchered your car and spend a lot of money to take a step back
the stock suspension on this car keeps the weight very low VS coilovers which has the weight higher. aftermarket torsions and shocks can give you a very competitive car without changing your suspension geometry that will rocket you to the top of the autoX classses. you can do your swap but keep in mind in autoX, weight is the enemy! check out the weight of the different swaps and find the one that gives you the most bang for the weight. also keep in mind power bands, transmission gearing, and redline. at autocross you spend most of your time in first and second gear, probably close to redline. if your motor isnt designed to be spun up at redline all the time (like the b20) you could be looking at expensive failure quickly
my STOCK 87 crx SI with STOCK suspension and STOCK ride height, stripped out with slicks and tokico blues, big autozone air filter and 2 inch side exit exhaust had no trouble SPANKING evo's and sti's at an SCCA autoX with a good driver. even the FULLY prepped (teins, IHE, slicks+slammed) 2g SI had a hard time even getting CLOSE to the little REX's times. no one believed it was the ORIGINAL POWER PLANT
you should fix the car up to best stock condition and autoX it that way to find its weaknesses. consider things like a bump steer kit and aftermarket torsions before you consider gutting the whole suspension
whew im done
Yet again Scott, you have all the answers
No. All the answers are in the Kakabox build thread.
Ohh yeah I guess that makes sense. King Kaymo has all the answers