If I am reading that correctly the D-Specs come with springs, the illuminas do not. Seeing as how you have a very heavy convertible you better find out what the spring rates are. Do they have a listing for IRS cars?
Also, if I remember correctly the D-Specs have a wider adjusting range then the Illuminas. You probably dont see much on here because they are a new product.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
93 Calypso Green LX
5 lug swap with 13" Baers and 10th Ann. Cobras, 96+ spindles and 11.65" Cobra brakes with stock Fox Axles
Front Coilovers and rear MM adjustables
Built 306 - AFR, FTI Cam, RPMII, ect.