If you think you will save money not buying leaf springs I would disagree with you....just price quality coil overs and springs....and you are just getting started.
From what I see, you are building a street ride.....my advise is to talk to someone that has ACTUALLY driven a Mopar street car with a 3 or 4 link. I have tried them all...heim ends, poly ends....even the rubber bushed ends and NONE will give you the plush street ride of your factory or HD leaf springs.
link suspensions (IMO) are for a track race car that requires the ability to change the roll center or instant center ....NEVER needed on the street. The street / road / highway is just too dirty and non predictable to get any advantage.
