I use a metal polish cream called autosol, made from germany.
But I mainly use it to clean my sparco wheels.

 

Actually, I've been using this manifold for a few weeks without any problems... yet. My shop custom welded an external wastegate flange and I'm running a Turbonetics Evolution wastegate. I also had my shop support the weight of the turbo with a brace to the engine block. The weakpoint of this manifold is the extremely thin tubing they use. If someone could make the same manifold with 3mm thick piping, it would rock (these manifolds are like 2mm thick). If you have easy access to a welding shop to patch it up whenever it cracks, it's not too big a deal. Just my 2 cents.

 

for the record, i did end up buying it, for only $95. havent got it yet tho.

 

I'm getting T4turbotiburon to fabricate a turbo manifold for my car.
And this has a piping for an external wastegate

His manifold is a completely different design to my ssautochrome turbo manifold.

My mechanic is going to be doing the installs.
I'm just trying to picture how my mechanic is going to do piping the wastegate.

My turbo has an internal wastegate with an actuator