Rear fender rub??

probably should have googled my question first.  Many opinions but in short when you drop either a Swing or IRS it does create neg camber but on IRS that can be adjusted out---which I am not going to do.

LOts of good info here.

https://www.google.com/#q=negative+camber+bug+IRS

There won't be much "negative camber" on your car if you lower a true, pan, IRS rear.  The spring plates and diagonal arms are set such that the wheels really do go straight up and down, maybe varying 1/2 degree or less.  They designed it that way on purpose.  If you really want that big negative camber you see on a lowered swing-arm car for your IRS, it ain't gonna happen.

If you just want to lower the rear, it's done by adjusting at the torsion bars and there is an article for that on this site under "knowledge".  You can drop it in 1/4" increments with combinations of inner and outer splines on the bars.

When you get to adjusting - consider the adjustable spring plates. They allow fine tuning of height without pulling the torsion bars.

Make sure you determine the length of your torsion bars when ordering.
Torsion bars came in three lengths for Air Cooled Beetles
Short  – 21 3/4 inches The torsion cap does not have a hole in it.
Medium – 24 11/16 inches
Long – 26 9/16 inches The torsion tube sticks out 6 inches from the spring plate.

Those type of adjustable spring plates were installed on my VS Superwide w/ IRS and because they are a single plate design there is some flex/twist that gives me a little negative camber. Dropped mine 2" and really like the stance.

thanks for input.  My IM came with those spring plates and made it a breeze to adjust ride height.  If the cost is not too much I will "spring" for them.  R these the same as the Atom Werks variety, which lowers without making the travel shorter?