headers or not to headers

'64 Cuda said

I find it hard to believe that headers could be installed on ANYTHING in 30 to 40 minutes. Even on my Harley.

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That's about how long it takes using tti's on a '70 duster with a small block,done it on 2 of my dusters..and for the guy saying he'd never use headers again because of leaks and not getting them to fit or seal correctly,have you tried tti's or dougs??...