Which springs are better?

Well what can I do with them? Whats the difference in them?

FRPP B Springs
Front Springs 425-530 lb/in.
Rear Springs 200-300 lb/in.


FRPP C Springs
Front Springs 650 lb/in.
Rear Springs 200-300 lb/in.


He's asking about handling, what you can handle as in a harser ride, and lowering

The "B" is suppose to be 1 1/8" lowering 3/4" rear

The "C" is suppose to be 1-1 1/2" lowering
 
I personally dont like soft(<650lb. front 200lb. rear) springs on these cars. I think the Bullitts are too soft, and B's are even softer(lots of body roll, movement). So from you list I would choose C springs.
 
You want hard ride? Get some Steeda springs. I have either the comp or sport ones. Haven't found the part number yet, but found the Steeda logo on 'em. My Eibach Sportlines had a softer ride. I like the "B" springs. The 'C' springs are almost too harsh for me. These pigs we drive aren't made for turns. Unless you spend lots of money on a full suspension. 'B' equipped cars are almost like stock feeling to me. The B's lower it enough to look good, and don't beat you to death when you hit a pebble in the road. I am dumping the Streeda's for some B's pretty soon.