I run an Alcan front spring that might be what you want , they call it the "+7".
It's 7" longer than stock , all the length is from c-pin back and also provides 7"-8"of lift
It has 11 leaves and flexs great and holds a BBC up! I run it with a +2 shackel moved back 5"
which gives me a nice ang.The one downfall is I did not move the front
diff forward so 38.5" tires make reworking the fire wall necessary. And
with a super thick leaf pack you can't run a Z-rate,though you could re-drill the spring perch to move the front up (whick I might do). I paid $470 for the front springs before deliv. and the flex very nice.
And as a small side note save your money up for a good front shaft the sq. tube shaft is a mess in the making. Just when you need them to compress or extend they bind and break S$%#. The one 32spl 205 front output that I have seen break was when a sq. shaft decided to become "solid". The cost of a 1410 joint, yoke and the 32spl input where more than a good front shaft from HAD.
I agree 100% to what DougK20 has said . One without the other is of no use.
A friend of mine has a front 60 in a Sub with 52s and 36" TSLs and stock style steering and it's like a Bobcat skidsteer in the woods
just my .02
Thanks Jeff