[turbotalon1g]

^well you just stated 2 good reasons, 1. HK(dollar sign), no argument about the quality or outcome of their product, but when is the last time you doubled the cost of a car for a little bit of power?
2. It cost as much as the damn car, obvious reason not to do it.

But honestly can you find it for me, i would love to see it.
Compared to hondas, dsms seem to be really restricted by the head flow, if the cost of the HKS conversion head was close i would be surprised to not see more do it, but i guess at that cost a fully built head will flow more or just as much.