Trike suspension question

DeathBySnuSnu, I saw this picture on the Broken fender thread and wanted to ask you what you were using for the transverse spring setup on your trike. This is the first swing axle, trailing arm trike setup I've seen like this. The usual setup uses 1 (or2) coilovers per side for suspension. Your setup keeps the topside a lot cleaner. I've got a California Sidecar trike body that I want to use on my trike that limits the available topside space and this looks like it may solve some problems.
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I tryed to find a better pic, but I guess I don't have one.

It is a sideways and upside down boat trailer leaf spring from Northern tool.
Sorta like a cross leaf of a t bucket roadster, but under the axle instead of on top of the axle.
It is mounted to the frame in the middle.
You can just make out the shackles hooking the swing arms to the spring eye in that pic.
So the axles pick up on the spring.
The spring is not a geometry component like torsion tube and spring plates are. Only provide the lift only.
The shocks are air assist units. Used for dampening and any extra load I want to put on it.

Did any of that make sense. Almost lost myself trying to describe it.

Yep, made sense. I'm planning to us Corvette C5 A-arms and uprights/brakes with an irs transaxle and had dismissed the transverse spring idea. I was looking at coilovers with pushrods but that was getting pretty complicated. Thanks for the info. I'm hoping to be at a place to start a build thread in the next couple of weeks. Right now just a pile of parts here and a pile of parts there.....

Unless you have the chebby parts already.....
Look at the dune buggy arms.
I had swing axles to start with.
The geometry of an irs set up should be a good bit more pleasant to ride.

Well, we're picking up an '07 Roadhawk this weekend, and I need to know the width of the front tire. I have a Wheeldock locking front wheel chock on a trailer, but it is made for a Goldwing tire. I want to make shims so the Roqdhawk tire will fit at least close to snug in the chock. Please note I'm looking at tire width, which will be a bit more than wheel width. I suppose within 1/2" will do.
Thanks in advance -