How can I improve

[JLM]

Now that I've got some more money to start working on the firebird one of the things I want to get accomplished is the suspension work. The car already has a disc brake kit up front with new PST polygraphite busings. The car is currently sitting on the stock control arms and springs with gas shocks.

I am looking to lower the car slightly (perhaps 1.5" front and 1" back). I'll need to pick a lowering spring up front that can handle the weight of a 455 cubic inch motor that will likely havev a turbo attached to each bank.

In regards to the rear suspension, I plan on a set of modified leafs to lower the car roughly and inch out back. Is there any other components that will help the rear-end keep up with the front end?