What size engine for the online/Youtube EC?

360 block any bore
3.58 crank only clean up allowed
6.123 rods
N/A only
Single 4 barrel
No roller cam bearings
Stock cam tunnel
Any production small block cylinder head
Has to run on 93 octane

My vote for rules.

I think this is pretty cool but I have a couple of questions.

What if I don’t want to run a 3.58 stroke? Am I married to that or can I use LESS stroke? What if I don’t want that much stroke?

What about if I want to use a 340 block?

How about a displacement limit? Say 380 inches. That gives a builder some room to get what he wants for geometry.

I’m assuming production means iron. Why not pick a head like the Speed Master because it’s cheap? You’d still have the option to use a production head if the builder thinks that’s the best option.