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Message: <blockquote data-quote="MachSVT" data-source="post: 1566429" data-attributes="member: 31918">In speaking with MM, I did coil over front / rear with 300lb front / 200lb rear with the Koni yellows already on the car and still new. My end result was exactly what I was after...very pleased. That said, it did take some planning / work / trial & error.Note: If memory serves me correctly, MM recommends a 150lb split front / rear. I wanted a little more spring in the rear for my future plans of a (possibly) trunk mount heat exchanger tank and MM torque arm with the trimmings. I already have a remote mount battery which I also considered. That said, plan out your future upgrades to accommodate!I experienced these issues:1. Interference of the front drivers side coil spring to the unibody. MM calls this out in their instructions, but due to my miss with #2, I did not have any initial interference, until I corrected #2...2. With MM camber plates, they provide shaft spacers to locate the top coil spring mount down from the protruding bolts on the underside of the camber plates. I did not space the top coil spring mount far enough down / catch the initial interference and ground up that top mount on both sides...GRRR!3. For whatever reason, after I fixed my embarrassing miss in #2, I then experienced #1.Had I taken my time and checked / re-checked, I would have not had any issue. Middle of summer, hot azz garage w/a/c on high, no lift, 53 years old, blah, blah, blah...I just wasn't as methodical as I usually am and it bit me.What wasn't recommended / discussed was:A. I ended up needing helper springs from Hyperco and helper spring mounts (forgot the correct part verbiage) where the helper spring meets the coil spring. It's pretty hilly here in Va, so I had instances where rear articulation would unseat the coil spring and give the loud "POP!" when it reseated. YMMV if where you live is mostly flat. Also, I just didn't like the coil springs being loose when jacking up the car, then setting the car back down again..."POP!B. I replaced the recommended 10" rear spring with 8". I simply could not get the desired ride height w/10" spring.Overall, do your research (check!), take your time to look over your work to be certain everything is setup correctly (FAIL!); If using adjustable dampers, some fine tuning on your rebound / compression settings to dial in the ride you desire and enjoy!</blockquote>