Just wanted to post my experience with the TU cast header. There are two reasons why I decided to get the header. First was for the improved flow . (I know that people have been getting good results from a stock ported one.) And second was for the ease of getting to the turbocharger.
The installation was like installing an original piece. It just sat perfectly. The ports matched up perfectly with the head. No touch up required. The S-60 turbo with the 3” swingvalve fitted just as well. Wastegate actuator and the braided s/steel feed lines as well.
The sweet part is that I ended up selling my s-60. And selling was a snap when I told the guy to come and see it run, test it, look at it and basically do what the heck he wanted to make sure the turbo was a good piece. He said I’ll take it, and an hour later he was leaving with it in hand and I was installing a GT30. One big turbo for an l-body. I was worried a little on the space available for the fit. NO HASSLE, it fit just as quick and I also installed a full 4” inlet pipping.
All in all it’s a great piece. Performance is there and the time and money saved are more than worth it.
Thanks to TU