Hey Juiced,
I just went thru a suspension buildup.
The spring question was something that took me along time to answer. I was dead set on H&R, and the only ones that they list for the Verts are the "RACE".
Here are the spec's on the H&R line for our cars.
H&R Race:
Front 750-850 lb/in 1.50 inch drop
Rear 260-280 lb/in 1.50 inch drop
I have talked to owners of convertables that have the H&R sport and supersports and did not get a common answer. Even thought the sport and supersport are listed for the Coupes, they will fit on a Convertible. They do not have an even drop.
H&R Sport:
Front 490-575 lb/in 1.60 inch drop
Rear 250-285 lb/in 1.50 inch drop
H&R Super Sport
Front 700-760 lb/in 1.75 inch drop
Rear 275-300 lb/in 1.60 inch drop
Here is where I was worried. I like the level drop of the Race spring but did not like the idea of having 750-850 lb/in rated springs on a car that is not a race car... (log truck ride quality) The drops on the Sport and SuperSports springs are not that drastic of a difference from front to rear, but that is what the drop would be on the COUPES not the Convertabiles.... I have talked to people that have had good luck, and some that were not satisfied.
Also that is what they got with using Urethane Spring Isolators with the springs so yours will differ if you use the stock rubber isolators or a different brand than Maximum Motorsports.
First you have to decide on your level of tolerance for a rough ride, being 43 years old, my tolerance was pretty low, but still wanted to get rid of the nose dive under heavy breaking on my cobra. Stock on mine are 400 lb/in on front and I believe 160 bl/in on rear.
I would give the Tech guys at Maximum Motorsports a call (1-800-544-8748). I did and they put me on the right track.. Just tell them what you are wanting to do and they will make sure you get what you need. I did and they recommended the new Eiback Pro Kit, with the Bilstein shocks and struts.
Also what else did you do or are planning to do with the suspension??
So far on mine I have done the following this winter:
MM Strut Tower Brace
MM Full Length SubFrame Connectors
Hotchkis Caster Camber Plates
EBC Sport Rotors
EBC Green Stuff break Pads
Stainless Steel brake lines
Eibach Pro Kit ( On the way )
Bilstein Struts and shocks ( On the way )
Sorry for the long post.... Think I have had too much coffee this morning...