Bobby_Wu wrote:One question that wasn't answered was if the stock control arms and etc will be enough with the JIC suspension systems..
The stock arms are pretty strong. When I was painting it, I sanded out the rust and painted it very thouroughly and found that they are actually reinforced inside pretty well. So basically, these arms are thick and strong and should be able to withstand the hard impact from coilovers.
Though, you have to remember that when the suspension faces impact, most of the vibrations and shocks will be absorbed by the tires, bushings, and springs (shocks will damp the spring).
If you have low profile tires and stiff springs, the impact will be absorbed by mainly by the chassis. If you have upgraded the bushings and have coilovers with low profile tires, chance is that most of the shocks and vibrations will be absorbed by the chassis. If you have this kind of set up, you can possibly tear your suspension chassis in no time.
I suggest that if you go with coilovers, stick with your stock bushings and arms since the stock arms have the tendency to "flex" a little when they face hard impact. The stock bushings also help absorb the harsh impact from uneven roads. Many people will tell you that the stock bushings will go bad, but I found that on the 240sx, the stock bushings are already very stiff and even after 10 years, they remain very hard. If you get the aluminum racing control arms and links that come with solid bushings, you can't drive your car on the street as these racing arms with racing bushings will be too stiff for street use and can damage your subframe and chassis.
In Japan, many people break their control arms and subframes because their suspension is too stiff to handle even the slightest bump on the road. Even HT states that their racing arms and links are for offroad use.
Remember that anti sway bars help deflect the shocks and vibrations and distribute them evenly. Anti sway bars MAY improve ride quality if you have coilovers.
For me, I think that the best set up is to get Solid T/C arms, Jic Coilovers, and sway bars. This is an already stiff setup, so I would leave the stock bushings and arms in place to help absorb the harsh impact and prevent chassis damage.
I hope this help, I don't think I did a good job explaining.
but really i'm having same dilemma, and for some reason im leaning more toward the HE's now. I know im not gonna be one of those brats bragging i have tein suspension, because it only matters to me and how it handles. Tein HE's were like made specially for the 240sx, and rx-7s...meaning you wont have ***holes with civics saying they have tein he's, or jic's. As for rebuild goes, tein usa does them, but i can go through signal for that also, they have their own rebiuld center there. hella confused but credit card ready 
