69 Dart - relocate rear leafs ?

i am slowly working on my 69 Dart 440 project. One thing I am seriously considering is moving the rear leafs springs in. I am looking at the USCT kit for about 220 plus ship. It bolts in for location , then weld it up. I was under the car, giving it a look over , and it looks like if you move the pass side spring to the frame rail it will be VERY close to the fuel tank . Has anyone had this issue ? Any tips on what to do and what not to do ?
Thank you

Will the wheel well be your limiting factor after relocating the spring? May just go for the offset shackle route. Exhaust routing is definitely an issue for clearance but the spring will not hit the fuel tank.