I've read these shocks are fine with stock springs or aftermarket springs.

I haven't read any reviews of anyone using these with stock springs?

Just wondering if they make the ride stiff or not, and what to expect when going from stock shocks to Boge/Sachs with the original springs?
Also how these shocks would compare to alternatives on stock springs?

At a guess, Boge will make a range of shocks for the Magna with different settings, from plush "feel no bumps" to racer boy hard "feel every bump".

The free length of the springs you use will affect the body length of the shock you need to order, I would think.

Go buy some, let us know how you go.

Are there different types of Boge/Sachs shocks if anyone can confirm?

Are there different types of Boge/Sachs shocks if anyone can confirm?

Check this thread

http://www.aussiemagna.com/forums/archive/index.php/t-99358.html

A suspension shop will be able to tell you.

My old setup was boge turbo shocks with kings SP's. Which carry a 10mm difference from stock and are slightly stiffer. I'm not to sure about boges/Sachs other ranges but going from standard shocks to boges was amazing. I'm sure you should be fine with standard springs.