I'm replacing my rear suspension. I got all the old parts off (lower and upper control arms, springs, shocks and quad shocks), but I noticed my spring perches are bent. Does anyone recommend a way to fix this?
As Noobz said, I don't see a stock style spring perch kit.
I'd also be somewhat concerned about how that damage occurred, did someone try to go full Dukes of Hazard?
1) As Noobz mentioned, you could attempt to repair and reinforce the ones on your car. Maybe cut them out of a donor/junk car that only had front end damage, then install on your car? Not sure how possible this is or what your skills are, I don't have the welding skill set so I'd probably have to have someone do it if it is possible.
2) There are adjustable spring perch kits meant to allow installation of coil over springs in the stock position. UPR has one. They seem to weld in so that may allow you to position them to account for the deformed stock perch. I say it would just be easier to install coilovers and only slightly more expensive. UPR Spring Perch
3) 'Cheap' fix, leave the perches as is and use LCA's with an adjustable lower perch so that you can adjust out any difference? Depends on how bent the perches are if the springs will sit flat enough. Not saying I recommend this, but just throwing out the option. Sounded like you already have the LCAs, but maybe you can return, sell, or swap them and get adjustable if they are not? Maximum Motorsports Heavy-Duty Adjustable Mustang Rear Lower Control Arms, 1999-2004
4) Coil over kit. Easiest install in my mind, everything pretty much bolts in and the stock spring perches are not longer an issue. Rear coil overs isn't a huge upgrade (compared to front), but nice, and gets around your spring perch issue. Hopefully whatever damaged the spring perches didn't damage the rear shock mounts? The kits are generally cheap, biggest expense would likely be the springs and shocks that work with it (what shocks did you buy to put in, they may work with a kit?). If you went with the UPR perch kit you'd be buying springs anyway. Several brands have kits, I am partial to MM, recommend at least read their tech articles. MM Rear Coil-Over Kits