As I stated, I sent an email to ToyTec, and this is a run down of what I asked (cut out some of the non important crap).
"I ordered a full lift from you last year (OME 881 / 891) for my 99 4Runner. After a year I purchased a rear bumper (CBI OffRoad) I thought the 891s would handle it, but this bumper is heavier then I thought once I got the tire and Jerry Cans on. Ordered the 10mm spacers to try to level it out. Worked for several days, but started to sag again. Saw the Superflex Coils and read a few threads on T4R.org, but not seeing the info I need. Hoping to get answers for these questions.
1. I also purchased your Panhard Drop Kit (not installed yet),but is that the same height I would need with Superflex Coils?
2. With the 891, I have the OME-60028 shocks. Will those work with the Superflex or are they too short? Will they work for everyday driving (winter time in Alaska, I'm not going to do exploring, or off-roading). What are the draw backs? (Till spring time, then I'll upgrade shocks)
3. Any other parts I have to start looking at, (brake lines and such)?
4. Or is there a different route I should be taking? Shipping weight of the bumper was 260lbs I think. (lets say pallet was 40lbs so bumper is around 220lbs). Plus Spare tire, and two mostly full Jerry Cans, and 30lbs of gear inside... (plus camping gear come summer time).
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Their Reply:
Hi Shannon,
The CBI rears are heavy!
1- I currently run our Superflex coils with our PH drop, stock panhard, 400 extra lbs, and it works fine and I’m still sitting at about 3” of rear lift. I would advise on gusseting the PH drop once you weld it in (see pic).
2- The OME 60028 should work with the Superflex coils but you will be VERY limited on down travel! I would advise on using the long travel shocks for the best overall travel of your suspension in back.
3- With the long travel rear shocks, I would also advise on our longer rear brake line. You can get away not using one IF you bend down the top bracket where the soft line meets the hard line at the frame.
4- Another option is to run rear air bags to help comp for the weight. We did this with our 4th Gen Runner with a CBI rear and it is working out great!
Firestone rear airbags - Toytec Lifts: Toyota Lift Kits: FJ Cruiser Lift Kits, Tacoma Lift Kits, Tundra Lift Kits, 4 Runner Lift Kits, Sequoia Lift Kits, Toyota Truck Lift Kits
This may be a good starting point to try with your OME coils. You can also use them with your Superflex coils if you go that route…
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That was from Chris by the way.
BUT!!!!!!! I just got a reply from someone who ran these coils with a CBI Bumper....
"I also have the cbi rear bumper and ended up having custom coils built to handle the weight. I was running the Toytec superflex coils and the spring rate just wasn't high enough to handle the massive steel from cbi. I had to get springs with a 300-320 pound spring rate, whereas the superflex run a 220 pound rate. I doubt you'll find something "off the shelf" that you'll be happy with in the long term. My custom springs ran $300, and well worth it in my opinion. I went through coil spring specialists. "
So, I am looking for another email from ToyTec for more info and I'll keep you posted.... As I told them, I'm not questioning their info, I just want to make sure this is the last coil purchase I make and I'm happy with it.
I'll keep you posted.