before I pull the trigger...

[formula]

I'm hoping you guys can help me make sure I'm aiming straight.

I'm getting ready to have myself a merry little christmas, and I know that there are many many people out there more knowledgeable than I am as far as what fits and what's needed for this part of my project, so I was hoping I could talk you guys into looking over everything and making sure I'm not missing anything.

As far as relevant systems go, I'm running airride suspension (with their airbar in the back), stock front spindles, and stock rear end.
I set up a wilwood brake kit with frank and lisa at prodigy customs--here's what I've got going through them:

-front 12.2" wilwood rotors with the new 6-piston caliper upgrade
-rear 12.2" rotors with 4 piston calipers and integral parking brake
-all necessary lines and that fun stuff
-wilwood billet 1 1/8" bore tandem master cylinder
-hydroboost

Then, I'm planning on going ahead and adding a detroit tru trac and 3.23 gears-- I've been told that p/n dtl-913a481 is the correct summit part number for our cars. Can anyone confirm this? Also, can anyone suggest a brand for the 3.23's? I've never rebuilt a rear diff before...should I do anything else while I'm in there? Don't worry, I'll be having someone else more experienced help me with the actual set up, but I'd like to ensure I've got everything I need beforehand.

I'm also going to have to switch to 17" wheels...I've got the design all picked out :D but I want to doublecheck my backspacing and tire sizing. does 17x9" with 5" backspacing and 285/40R17's seem right?

Last, can anyone suggest a good aftermarket power steering pump for a chevy 350? I'm going to be running the hydroboost and my new flaming river box, so I figure it's about time for a new pump as well...

Let me know if you guys can think of anything else I should do at the same time! and thanks!

[Steve1968LS2]

Sure you don't mean 13.2" rotors.. 12.2" seems small with the 6-piston calipers.

[formula]

Nope, Frank's got a new setup that mixes the 12.2 rotors with the 6 piston calipers. Easier on the cost, easier on clearance, but still a little extra oomph over the normal 12.2 setup. He's got a thread on it here.

[Steve1968LS2]

Gotcha.. couldn't you fit the 13-inch rotors behind the 17-inch wheels?

You'll love the 6-piston Wilwoods, that's what I always run.

[formula]

possibly, but the 13 inchers are 800 bucks more. So....yeah.