It all depends on what you want and how you want to get there. If you just want a mild drop with no adjustability, then heat or cut your coils, or get new shorter coils for your car. Maybe Jamco has something for a 1959 Buick. Lots of people will say not to heat your coils, and lots will say not to cut your coils and then even more will chime in saying how they've done it this way or that way and not have any problems. if you have the means and want adjustability, then I'm sure airbags are the way to go.
rear coils are tapered and verry tall, front are an easy cut. But the back thats a little tricky. how low are we talkin?
First of all, understand that what you have now is likely well below stock ride height due to age and wear. Thus any new spring , even one designed for a drop, may be higher than yours already is when installed. Got it? OK. Get your old springs out and measure the free height, wire size, and construction style. Go to your local auto parts store and ask to see the New Replacement Moog Coil Spring Catalog. In the back you will find charts of springs illustrating styles and charts showing free height, ride height, wire size, spring rate. Find a spring in the application listings for a full size Buick, heck they may offer the new ones for your car. Look up that spring number in the back charts to get the spring rate. Then find the spring style chart and look for the wire size and spring rate your old springs and the cat info tell you. Now find a spring with that spring rate, wire size, but shorter in free height by the amount of drop you want, if known. Order those springs and see what happens. They should be returnable if not scratched up badly. You'll have to buy shorter shocks too. It is always better to use a new set of coil springs that fool with old worn out sagging, especially the driver's side, springs.
I hear U .However these are new springs all the way around that is why it is so tall.The person who installed them wanted the Stock look.I've since bought 225X15 70series which helped a lot.Could maybe go to215s if they would support the car?I hate to loose the ride..Cruiz Eazy...
I have an issue of car craft, its either 1st year or 2nd year of publishing. Theres a very intresting how to on lowering cars w/ rear coils, in particular it was a Buick they did. Basically you cut the upper coil seat (floor), n then you fabricate a box or whatever you think is fit w/ a higher seat position. Obviously the higher the seat the lower the car. i did this in my car b4 baggin the rear, i fabricated a inner crossmember and worked great! best mod i ever did. Other than this bags are the best way to go. Give Kustombuildr a bell here on the hamb, you'll be amazed at how much of a deal he can offer ya. These here are pics of the xmember i did, then the position where i installed it and the final result. I also rised the torque tube tunnel as it was touchin the tube! Hope this helps. and sorry for the crappy cell-phone pics!
U'r ride sits just right.As U can see in my picture the front end has to come down 4 to 5 inches so it sits straight.rear too.
DONEZ..this looks like it might work.Don't want to drop it too much.Just enough to show a little white..OLD SCHOOL.Love them lowwwwwww.