You must be talking about the kit that Marlin and All-Pro sell that uses the IFS steer box. That is getting higher and higher on my "Want List".
Yup, thats it. I was origionaly running stock 85 PS with a heavy duty tierod but when I went to 35s i ditched it for an IFS box and
high steer. Next to my crawler gears and 5.29s it is by far my favorite mod ive done. Turns the 35s with ease. I only wish I had upgraded it sooner. Just make sure when you decide to get high steer that you at the least get the IFS box plate kit as well. I plated my entire frame up front but you can get by (if you are stilll using stock shock towers) with just the IFS plate. Just an extra safety precaution and its cheap. I definitly recommend it though! take care