So I'm going to replace my springs struts and shocks this weekend. I can't decide on my rear springs. I'm going Federal Mogul all around. I'm putting 5662 springs on the front, but what about the rear? I've been reading people complaining that the CC635's are too high or stiff or both. Are the 5665 springs that much better?

Napa's got the CC635 in stock, but I have to order the 5665 and pay an extra $15 bucks shipping -- and do the rears next weekend. I don't want to wait (and pay extra $$) but I don't want to be sorry either. A website shows the spring rate on the CC635 as 104, and the 5665 as 107. Doesnt' that make the 5665's stiffer?

Anybody had experience with both?

 

The CC springs are variable rate, also called Cargo springs. The 5665 are linear.