I have one of these on my car was a bit pissed off when I got it the casting was a bit rough but was all structually sound took it to the performace shop down the road they said it was the same as the greddy 1 and myte as well use it, sanded it up and put a etch primer then a high build primer on painted it black with a red pearl looks the part now.
anyway back to problems or issues, your standard throttle body will not fit as its designed for the q45 but allgud i was told my standard t/b will be good for 300kw so got a mate to make up an adapter plate for it which was allgud but quite a mission because the holes were so close to oneanother.
The plenum did not come with any nipples or bolts so had to source them which was actually soorta costly.
supprisingly my throttle cabel juuuust reached am prepared to replacve tho haha.
if you do decide to use a q45 fuse box will need relocating, but in my case i had to remove the washer bottle.
1 up is the i/c piping on that side is soooo short. one more thing was you can fit the standard fuel rail on but with the cast be aware that it may need grinding flush as it may not bolt down entirely 100% causing a vacuum leak around the injectors.
Now what every1 is wanting to hear, car went abit harder indeed my car was only on standard boost then and the response in my oponion is ALOT better, till my car has something wrong with it now haha, not anything to do with the manifold tho haha-hopefully.
It does clear up ALOT of the crap in the engine bay pipes etc and made it look alot more impressive im happy with it so far.