Use genuine parts and coolant. saying that i actually work for toyota and always use the parts so its really a given i would say this :blush:
If you develop a good relationship (sorry that sounded a bit gay) with the spare parts bloke at you toyota dealer you can get really sweet prices.
I get below trade on everything (perk of the job) and works out cheaper then a majority of after market versions of the parts you will need.
Just give it a go, if not then try to get someone who can get trade to buy parts for you from repco, supercheap, ect.
Lastly the places might say they are giving it to you at trade but they are probably just taking a couple of $$ off (better then nothing though).
Hope this helps
chris