After spending a bit of time around the forums, I'm seriously contemplating changing my LIM and valve cover gaskets to be proactive. I've seen the excellent writeups here, but still have a few questions:

1) my car is a 2001 SSEi with ~67,500 miles on it. It was well (dealer) maintained, one owner before I had it. Should I be in a rush to change the LIM gasket? I've seen some people recommend doing that around 100k, but the car is 8 years old..
2) From reading, it sounds like if I'm going to tackle the LIM, I'd be pretty smart to tackle the valve cover gaskets too. Is that a good assumption?
3) Is there any thing else I should be looking to do while I'm this deep into my car?
4) are there any tips/tricks to making this job easier on this particular car?
5) what are the parts (kits?) I'd need? Where can I obtain them?

I'm a little nervous about taking a car this far apart (but I'm more nervous about the prospect of the LIM failing completely). I've always been pretty handy (I've done a lot of my own small work on the various clunkers I've owned), and I'll probably be able to ask my father for help (he'* rebuilt an engine before by himself - he'* by no means an expert but he'* exceptionally handy as well), but I'm still nervous. Just how intricate of a job is this, and what tools should I have on hand?

Here is a list of the parts that was given to me by BILLBOOST37.


"Here'* a list of the parts and numbers that would be good for the LIM change up if you push forward with that".

Series 2
Part # ............Name.................................. ...............Rockauto
Fel Pro
ES70599...........Fuel Injector O-rings (need 3)....................$1.91
VS50465R.........Valve Covers (L67) w/grommets................$40.79
MS95744...........Plenum (SC to LIM) gasket w/rings (L67).....$8.43
61024..............Throttle Body gasket (L67)........................$3.52

Fel Pro (optional)
35595..............Thermostat Housing gasket........................$1.00
35666..............Thermostat Seal (rubber)...........................$1.87


Dorman
47065.............Coolant elbows.........................................$3. 00

GM Dealer/Intense
89017816..........Lower intake gaskets............................. ~$50-70
......................GM Pipe Sealant with PTFE...................... ~$10

GM (optional)
12345982.........GM */C Oil (M62 1, M90 need 2).................~$10
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Here'* a write up that you may find helpful.

https://www.gmforum.com/t278911/