your opinions on spitfire headers

I don't understand all of the installation problems people are stated regarding Spitfire headers. I have a 1964 Valiant 4spd, and I installed Spitfires without any problems. In fact, I've installed and removed them a couple of times, and I'm pulling them again in the next couple of days for heat paint. On my car, they drop right into place and bolt up, without disconnecting or cutting anything. The only thing I do agree with is, the outlets point towards the torsion bars. I bought a box of various 2 1/4" pipe bend pieces off ebay and intend to route exhaust around torsion bars, after flanging ends of headers, so all exhaust pieces are removable and reinstallable in the future, if necessary.
I also find it very, very hard to beleive that any stock exhaust manifold could flow as well as these headers. Although I don't have any test results, it doesn't take a rocket scientist to see the improvements these headers offer over stocktype exhaust manifolds.
By the way, I removed fenderwell headers from my car, and installed the Spitfire headers. I just didn't like the exhaust running through the front tire area.
Last, but not least, it took a considerable amount of time to receive these headers from Harold. It seems that delivery dates kept coming and going, without me receiving them. They finally arived, a few months after original delivery date.
All in all, in my opinion, I would recommend these headers to anyone on a budget trying to attain an increase in performance over stock type exhaust manifolds, but be advised, you will need to do some pipe fabrication to get them connected to your exhaust system. If you have the money though, and are looking for the best available at this time, it would be hard to beat the TTIs for fit and most likely, performance. Mike