Even though this is news to me, I will concede your point.
However wouldn't a $500 block girdle be a much cheaper fix than trying to achieve high horse power from the 5sfe?
I'm not sure that you understand what I'm building. It is fairly common on this side of the pond to build a 5S based stroker. Also known as 5S-GTE (5S block with 3S-GTE head).
Like I said before, I got the 5S-FE block for $50usd. So it was even cheaper than finding another 3S-GTE block to build from.
I have a 5S-FE crankshaft ground for 3S-GTE rods. I'm using 3S-GTE Eagle rods and Wiseco stroker pistons from ATS.
Besides being stronger than the 3S block, the 5S block's stock bore is 87mm which gives a small displacement advantage over the 3S based stroker.