Best bet on rear suspension?

I just have to throw this in to see what it stirs up, hehehe http://www.magnumforce.com/store/de...&BrandID=&Category=&SubCategory=&Search=&Page=:snakeman:

Also, want these work on the Duster? It's got a listing for the valiant, so I figure, maybe? http://www.magnumforce.com/store/de...BrandID=&Category=&SubCategory=&Search=&Page=

And just for reference, I came across this too: http://www.magnumforce.com/store/de...BrandID=&Category=&SubCategory=&Search=&Page=