Suspension and Steering

I do my own alignments on my 1988 Carrera.  I have the factory shop manual, the spec book, all 3 editions of B. Anderson's books, and about every other repair reference that exists, but I can't convince myself whether the front toe spec of 15' +/- 5' is per wheel or total toe.  The factory manual says front toe is 15' +/- 5' (not pressed) but gives no value for max difference left to right.  For the rear toe it uses the words "toe per wheel" and does give a max difference left to right.  The Bentley manual for the Carrera says that the15' +/- 5' spec is total toe.

I recently moved my car from Massachusetts to Southern California.  While pulling into and out of parking lots and garages there are what seems to be huge dips in the road (Never had this problem in Mass).  My front end always bottoms out and scrapes the iron bar in fron of the car.  The tires are properly inflated.  It just seems the suspension needs to be adjusted so the car is more horizontal?  Suggestions?

Model: 911(964), Year:1987, Mileage:58,000, Type of use:Street use only
HiMy old strut is a BOGE PN: 911 341 042 04 and the new strut is a PN: 911 341 913 06. Question: Is the new part number interchangable with the old part number?Thx in adv, Brian

Model: Carrera 4, Year:1994, Mileage:85000, Type of use:Both Street & Track
Do you have any experience with Koni FSD struts? They sound great, good ride with good response. I do several DEs a year, but still want a comfortable ride on the street. I am not lowering the car. Should I also have the rubber suspension bushings changed since the car is 20 years old? If not FSDs, then what would you recommend? Thanks.

Model: 911, Year:1986, Mileage:85000, Type of use:Street use only

Model: 911, Year:1989, Mileage:43,000, Type of use:Street use only
how do you remove the steering wheel from the column?My 89 911 just developed a rubbing sound in the upper sleeve, like something is inside it rubbing?

Model: 911, Year:1987, Mileage:62000, Type of use:Street use only
I am planning on replacing both rear axels on my 1987 carrera, must I remove calipers and rotors ?

Model: 911, Year:1989, Mileage:45000, Type of use:Street use only
I have a 1989 911 (3.2) and recently started hearing a creaking sound from the rear when I go over bumps. It sounds kind of like like a creaky old bed spring. When I press down on the rear of the car I cannot duplicate the noise, but while driving it seems to be getting progressively worse. The car has 45,000 miles on it. Any thoughts? A bushing? Something else?Thanks,Greg

Model: 911, Year:'89, Mileage:114000, Type of use:Street use only
My steering wheel has a slight 'rock' side to side and up and down, it feels tight in and out..when moving a small rattle starts, which stops with a tighter grip on the wheel...please advise...thank you

Model: Carrera, Year:1986, Mileage:90000, Type of use:Street use only
I am new to the Porsche community. Bought my first Porsche last May 11: 1986 Carrera. I find the suspension quite noisy over bumpy roads. Can live with that except for a peculiar suspension noise that I have not been able, so far, to associate with left or right, front or rear. That peculiar noise sounds very much like a tire rubbing somewhere when I hit a sharp bump or dip. The car has the original size wheel and tires and there are no marks whatsoever on the tires. What could be causing that noise ?