Spring relocation ride height question

I want to keep leafs under the rear of a 70 dart.

I plan on mini tubs and would like to relocate the springs for extra tire clearance. Two questions

I plan on building with some corner carving in mind. Should I use SS springs or some other leaf setup?

How much is ride height increased with the inboard springs?

I would like avoid that jacked up funny car look but want to increase the available tire clearance.

Thanks.