<b>Edited: 2/8/2013 10:39:31 AM by nvrloenuf<br></b>Some people will say that you do not need to tub the firewall with 24s but I am not sure what tires they are running.. I have baby tires on my 26s 275/25/26 which is almost exactly equal to 305/30/24 and had to cut into my firewall pretty heavy and move my brake booster over 3". So if they are not tubbing the firewall then they are sitting dead on the tire and there is no free rolling whatsoever.
I ran spindles from BIO and loved them. There is a guy named Alec who has one layed out and Z'd on 26s and he is running stock spindles and control arms. So they are not required but are nice. If you contact Jimmy's Rod and Customs, I think he still has or has access to a full custom set of BIO spindles.
I have all my build pics and stuff if you need.
Here is the build link with some of the pics.
http://www.infamousnissan.com/forum/showthread.php?t=21920