My last leaf-spring car used a 4-link kit with roller mounts for the leaves. I made clamps on the fronts of the leaf springs by blacksmithing 1/4-inch thick strap that I formed to be tapped in place from the outside inwards. Bolts through the extended inner ends pulled them tight. The rear axle was a brand new Lincoln Versailles with the 9" center and factory disc brakes. Clearance on the outer ends of the clamps was just fine.
The car was a '72 Pinto with a 466 CID engine built from a 429 SCJ. It was a project car for Super Ford Magazine. I got the very first pair of aluminum heads that came out the door from the Smith Brothers experimenting, before they sold out to Summit. The car weighed 2260 with 1140 on the rear wheels. The engine was set back under the original dash space and the seats were mounted on the back seat foot space. Entire front clip, doors and rear quarters were fiberglas. Top was chopped four inches. We used a full length 2X3 ladder frame integrated into the floor pan and an 8-point cage. Konis at all four corners. Traction was excellent with Pirelli 345-35X15 P zeros at the rear and 285-40s on the front.
KS