Paul, it has everything to do with driveabilitythwell, almost).

If anyone has ever driven a a car with equal length control arms, you will understand.

In that case, the equal length control arms, provide SUPERIOR handling, but the car is EXTREMELY sensitive to..bumpsteer, input, suspension cycling, etc.

Teh unequal length control arms, provide a different axis of motion, WHICH, helps counter bumpsteer etc...

Now, also, equal length control arms COULD provide MUCH more suspension travel in certain cases, but, the wieght and expense is nuts(some Pre-Runners, trophy trucks)..

There is an extreme amount of geometery that goes into designing front suspensions(or I shoudl say, ANY independent suspension).

BUT, that said, Paul I know exactly what you are talking about, those are the questions that lead to me going to a vocational shool instead of a regular high school, learning, then working in a shop...

I will say this, its PFM, it just works.. <img src="/forums/images/graemlins/smile.gif" alt="" />

Anyway, I dont know any better way to describe it than what I have already said...

Chase