It was me who brought in "accurate replica" to this thread, not Knockers (I think)
Speaking for myself, I was answering fordracing65's claim that "nobody in a Kirkham is buying iron". While I believe that most KMP's probably have ally blocks, half of the KMP's I'm in touch with regularly are in fact iron. And my experience both on and off the forums is that the ally block KMP's are typically the billet parts/non paint cars, while the painted/iron block KMP's have bumped up their level of accurate bits and pieces. That's all - just my experience. Didn't mean to add any fuel to the fire.
Call them what you want, some are more accurate than others. Not introducing the word "real" anywhere here.
And no comment on performance because it varies greatly, but most ally blocks are hot rodded to a degree, so they probably will perform better than iron but that doesn't make ally better by stretch other than weight, really.
Talking about FE's here. SB's don't matter
