Just wondering which exhaust manifold/headers people are using for a classic impreza turbo around 400bhp?
Have cracked two cheap ebay ones so wondering which to go for to get most power and reasonable price. Links would be appreciated.

Also is it better to have equal or unequal lengh?

 

Im running oe ported and wrapped headers from Harvey on here, they made a hell of a difference to the way the car picked up, pm him for info

 

ceramic coated gt specs

 

See here:-

AndyForrestPerformance


So, for over 350+ bhp then GT Specs headers and up-pipe heat-wrapped, or ceramic coating as wrighty says.