timing chain and sprockets

[Ulix Goettsch <ulix@u.washington.edu>]

I am building an engine right now and am wondering about the above.
Is there a good way to determine if I need sprockets?
I have heard horror stories of $10 timing chains that last 2000 miles.
Where can I get the good stuff?

Thanks,
    Ulix                                                    __/__,__        
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                                                           '67 Sprite