Leaf springs?

Well congrats on the new purchase. That is awesome to see you and your brother building a car together. My father and I built mine because it was my first muscle car and he has been building his own for a long time. It was a great bonding experience. I think the leafs ride great. Their not soft but their not jaw breaking stiff either. When I bought my car they were junk and spongy as hell. I put the same pair on my 72 scamp and have never had a problem. Good luck with your build I wish you guys the best. Make sure to post some pics of your progress!