Offset shackles
That's a gusset, and I wouldn't cut that. The outboard spring mount to frame rail is already a part of the car that benefits from additional gusseting, which is what the torque boxes do. Plus it only buys you the thickness of the what, 18g sheet metal anyway? If you must I'd grind the edge of the hanger and open up the mounting holes for the hanger a smidge to slide it over, not alter the gusset.
Regardless, the MP kit doesn't interfere there anyway, at least not on my car. The interference is at the top, where the hanger is up against the frame rail. The slight gap at the bottom is because the frame rail tapers from top to bottom.
Maybe? Depending on the install. The Mopar Performance (MP) ones are the ones I took pictures of. Despite being advertised as a 3/4" offset, the front hanger has a 1/2" offset from stock. The rear shackle has a 3/4" offset. Even if you move the perches 3/4", you'll never get that because the front hanger only moves a 1/2". And since the most restrictive tire clearance is at the sidewall bulge, most of the way forward to the front hanger on the spring, that will be the limiting clearance no matter how far you move the rear shackle.
It does make a significant difference even getting a 1/2" of additional clearance though. On a Dart that's the difference between fitting a 255 and a 275 in the back. And on a Duster/Demon/Dart Sport or Barracuda it's the difference between being able to run a 275 and a 295.
The MP kit is pretty hokey. DoctorDiff's version move the hanger the same 1/2", but because of the way he countersinks the bolt you don't have to dimple or drill a hole in the frame to clear the spring eye bolt like you do with the MP kit.
That's a gusset, and I wouldn't cut that. The outboard spring mount to frame rail is already a part of the car that benefits from additional gusseting, which is what the torque boxes do. Plus it only buys you the thickness of the what, 18g sheet metal anyway? If you must I'd grind the edge of the hanger and open up the mounting holes for the hanger a smidge to slide it over, not alter the gusset.
Regardless, the MP kit doesn't interfere there anyway, at least not on my car. The interference is at the top, where the hanger is up against the frame rail. The slight gap at the bottom is because the frame rail tapers from top to bottom.
Maybe? Depending on the install. The Mopar Performance (MP) ones are the ones I took pictures of. Despite being advertised as a 3/4" offset, the front hanger has a 1/2" offset from stock. The rear shackle has a 3/4" offset. Even if you move the perches 3/4", you'll never get that because the front hanger only moves a 1/2". And since the most restrictive tire clearance is at the sidewall bulge, most of the way forward to the front hanger on the spring, that will be the limiting clearance no matter how far you move the rear shackle.
It does make a significant difference even getting a 1/2" of additional clearance though. On a Dart that's the difference between fitting a 255 and a 275 in the back. And on a Duster/Demon/Dart Sport or Barracuda it's the difference between being able to run a 275 and a 295.
The MP kit is pretty hokey. DoctorDiff's version move the hanger the same 1/2", but because of the way he countersinks the bolt you don't have to dimple or drill a hole in the frame to clear the spring eye bolt like you do with the MP kit.