Porsche 944 or 928 spindles

[Veedub]

I read in one of the forums they were interchangeable with the superbeetles, but can they work on a standard 72 bug?If they can, will they work with the stock drums with the 4-130 bolt pattern?I know they make 2.5" drop spindles but im told they wont clear my front 13x5.5" wheels.And I was told that just running and adjustable beam an lowering it the full 4" is unsafe.
If needed, I'm planning on either running a 175/60/13 or a 175/70/13 up front.
the 175/60/13 is 21.3" tall in height
the 175/70/13 is 22.7" tall in height.
The reason for lowering 4" unless i dont need to lower it that much to get a 1" gap between the fender lip and tire.
Thanks for any info.