Originally Posted by tytek
They need to be used with the EJ255 or 257 and applied to pre AVCS builds. Like an RSTI, for example. There are bunch of guys running those heads on the RS site.
True. I was speaking along the lines of 2.2/2.5 build. Either way, I'd rather use the 97-99 EJ25D heads. They have a better quench design, you can rev them higher, and they're just as good after some porting. I'm not saying they wouldn't work, I'm just saying the non-HLA head is a better start.