I highly recommend the springs you can get from Parker at V-performance. I've had them on my 71 142E for over a year now, and really like them. Plus they work great for my rallycross habit. :) I also have a 142 built for road racing that is VERY lowerd (as in the 3-4 inches you were talking about) and the front and rear tires are actually up inside the fender openings... And yeah, you would never want to drive that car on the street. Far too low, not to mention a very harsh ride. But it works good as a race car though!