Does 3S-GE head bolt on to this 5S engine?
Wikipedia lists them as the same engine family,
and the next logical Q is could a 2.2 liter BEAMS engine be built?
Or use the 5S crank in the 3S block

The long forged rods I saw a pic of on the beams owners group website
look suspiciously like something I have seen before, and I would know
how to get them at a big discount I imagine. Using cheap(er) aftermarket
parts from different engines is common practice among performance shops.
They slap on a huge mark up and sell it as Toyota Hi-Po parts (or other brand).
I used to do it for american engines but tried to keep the prices reasonable.