Want to drop 89 vert a little

What choices do I have? I called a place called "suspension source" that I saw on ebay. They have cheap springs($80) probably from China, but they told me the springs for the coupe/sedan are completely different and they do not have the vert springs. I will do some research but I figured you guys probably know more than the stores that sell the stuff.
Thanks

H&R and Eibach are great, but I'm guessing way above what you're hoping to pay.

Have a look around on r3vlimited, there's some great info if you're willing to wade through the immaturity.

I do not have any data but have read other posts that maintain that the convertible springs and tire size is set up to match up with the less stiff body to minimize vibration and improve the ride. A change would likely alter the handling.

Bob in Lake Havasu