I'm new to the forum and could use a little help. I recently purchased a beautiful 1971 240Z with a Chevy conversion. Problem is that it rides like a rock. The springs that are installed are yellow and from what I've read they are made by King. What I'm looking for is someone who has personal experience with an after market spring that will keep the slightly reduced ride height but has a smoother ride. Any input would be greatly appreciated. This rock hard ride ruins a really fun car.

 

Nice picture, very cool car. I would give ground control a call, before you go you might go to a weigh station for trucks, or some place you can weigh each wheel, that will help them calculate your springs.

Ground Control Suspension Systems

 

I appreciate you compliments but I can't take credit for the car. I got lucky and bought it this way. Thanks for the recommendation re: Ground Control. I've emailed them.
Thanks again.