I did now dig a bit more into the info I have. I can't see any reference to compression height of the Toyota pistons, just mention of a 3.1 inch stroke.After loads of looking at various rod lengths and ratios I’ve been told by an Oz engine builder not to get too carried away with this and it’s only a 1 percenter in terms of the overall build, 1st thing to look at is getting the block sonic tested for bore thickness before you commit to your bore dia. If you can then find the right piston for a set of L24 rods I reckon you’re in business.
The Toyota R20 pistons look worth a look, are they 30mm ish compression height?
Do Kameari produce custom pistons? I could only see standard replacements on their site.