looking for input on OBX exhaust manifolds

[Mack]

SO, Ive got a 300zxtt that needs a new engine. Ive got one out of an automatic TT with under 100k sitting on my garage floor. I want more power, and I am going to do it before the engine goes in, because its impossible to do anything once its in the car.

 

My plan so far is a mild port and polish, re-gasket the engine, waterpump/timing belt maint., OBX twin turbo headers, a set of gt28rs turbos, better intercoolers, turbo back 3" exhaust, and copious amounts of ceramic coatings to control heat.

 

The manifolds I found are made from ss321, which from what I understand is better than ss304.

 

"Like all OBX turbo headers, this too is backed by a lifetime warranty against manufacturing defects."

 

thats a direct quote from the auction. While that sounds nice on paper, and would offer good peace of mind, on a 300ZXTT you HAVE to pull the engine to get the damn part off. So, does anyone have any experience with these parts?

[hoov100]

Just port the stock exhaust manifolds, they flow REALLY well from what I have read and seen.

[Jehannum]

If you're going to bother with the exhaust manifolds, go with the MSPs.

 

Those OBXs look like clones of the old SZ Inconel manifolds, and the MSPs outflow them.

[Mr.510]

I've never seen those particular OBX manifolds in person but I have seen some of their headers. They looked like a 3rd grader welded them using a MIG with no shielding gas. They might actually be stick welded. I hadn't thought of that possibility and that would explain the look of the welds. They are made in China...