OK---first a new dropped axle probably $300 not 3k

To use the axle you have with a transverse spring will require you to modify the axle not only trimming off the spring perches but also welding in 2 vertical attach points for the pins that mount the radius rods--that is the big problem--if you get them in the correct place and angle---you will still have a stock height axle---I am just assuming that you probably want some drop to it .

The axle you have pictured has some serious design issues---in addition to a huge amount of fab work---the steering probably doesn't have enough room behind it for the cross rod to work lock to lock--

Remember one thing as you proceed with your project---YOU will judge it by how it rides and handles(drives) not by how it looks---Make the front end right---no short cuts or maybe good enough, I had this laying around so I used it----