alternative to custom springs

[wheelin72]

I have a 71 shortbed 4wd and am working on setting it up for the dunes. Ive been looking into custom springs but they seem to have a very long wait. I need all new hangers and from what i have heard that the longest spring is best.
Is there any lift spring for another application model truck that would be longer. I would like the longest springs possible for both the front and rear.
ANy ideas?
thanks Ryan

 

[ben427]

88 up chevy pickup springs are 63 inches long and very flexy.

 

[wheelin72]

Could they be used in the front?
Do you all think i just just wait for the custom springs?