bilstein shock questions, my V8 is sagging Options

[xsJerry]

my recently purchased '75 5.7 is sagging in the rear, and I'm hoping someone can help me out. The clips are set to highest setting and it's still low, and when I jounce the rear end, there's no movement. here's my questions:
1. what do I have now, the coil diameter is roughly 3.625 (92 mm) X .47 (12 mm).
2. Renegade recommends 200# springs but only sells the coil over kit $350 or so. Where can I get springs for this shock? (IMG:style_emoticons/default/idea.gif)

Any advice would be much appreciated.

Thanks

[Chris Pincetich]

more pics would help
Most 914s look low in back, that is normal
V8s are heavy, so yeah, yours could be suffering, but it could be "something else"
The coil-over conversion opens up a world of new options, which is why I pulled the trigger and got one. A set of springs is included in the cost (IMG:style_emoticons/default/beerchug.gif)
I am using 175# springs, stock TIV, newish Koni yellow shocks, 205/50 tires, but have needle bearing suspension pivot bushings so the 175# is not "as stiff" as if used with bushings that experience more friction

[xsJerry]

more pics would help
Most 914s look low in back, that is normal
V8s are heavy, so yeah, yours could be suffering, but it could be "something else"
The coil-over conversion opens up a world of new options, which is why I pulled the trigger and got one. A set of springs is included in the cost (IMG:style_emoticons/default/beerchug.gif)
I am using 175# springs, stock TIV, newish Koni yellow shocks, 205/50 tires, but have needle bearing suspension pivot bushings so the 175# is not "as stiff" as if used with bushings that experience more friction

here's some profile pics. I measured it at the donuts, and found about 3/8" lower in the rear (probably about 1/2" for the length of the car). It does give an impression of pointing upward as you are driving.

[xsJerry]

it's also about 1/4" lower on the right side rear than the left. you can kind of see this in the photos (looks lower in the rear when looking at the passenger side)