I don't know how many of you are on the SupraForums, but I posted over there about some new products I'm working on....one of which is a coilover setup....
"I will be offering two different suspension setups, one for street, and the other for the more race orientated.
The street setup will have the fronts similar to the GC design. The rear will take some inventiveness, but I do have a design in mind. I did some research, and found that the IS300 has a similar issue with the upper portion of the shock being surrounded by the shock tower, too close to allow a coilover spring up high. The way this is solved is by bolting on a sleeve on the upper portion, that positions the spring perch down low. This same sleeve will be the adjustable portion on my product. The lower mount will also have a bolt on spring perch. All products will be CNC machined from either aluminum, or steel. I havent decided yet.
These sleeves will work on just about all shocks, fitment on skinnier shocks will be handled with rubber o-rings of various thickness. I may also think about offering shocks with this setup, it depends on the initial reaction when i get the sleeves done.
The race setup will see the fronts including race style struts, possibly Koni, with custom lower mount and spindle if I can't work around the stock ones. The strut body will be fully threaded, so infinite height adjustment is possible. These struts are full ride adjustable. I may also offer pillow ball mounts to go with this kit.
The rear of this kit will be a very unique one, that will most likely require some modification to fit, but the results will be more than worth it. The stock location of the shock will be replaced by a solid bar, that has adjustable rod ends. It will run through the stock upper mount hole (which will probably need to be enlarged), and bolted to a cantilever arm. This arm will pivot and push against the coilover shock top. The shocks will be mounted in the car, behind the back seat area. They will sit in a Vee position, and mounted on a tubular frame, which will also act as a shock tower brace. The shocks will be fully adjustable, as will the spring seat. The beauty of this setup will be that fact you can lower your car without altering your shock travel. This is accomplished by adjusting the rod ends, or for more extreme height changes, changing out for a different length rod. So regardless of car height, your shock settings can remain the same.
I'm trying my best to use stock mounting holes, and to not require interior panel mods, but it's looking pretty tough. But I figure if you're serious enough to buy this kit, that shouldn't be a biggie.
For both kits, different spring rates and lengths will be available. As for time frame, this will depend on my ability to get funding for R&D, plus how much spare time I have to work on this, as I'm a full time student and work part time also. I'll do my best to finish up quick though. The more feedback I get..the quicker I work =)"