Max a 16v 4AGE can be tuned to?

[Uzelac]

Both 20V and 16v head have pretty much the same max hp level.
Older 16v have weaker low end, but if you switch to 4AGZE internals 16v can be as much as powerful.

I think it costs the same to pump BT or 16V to 200HP.

What makes the biggest difference in my opinion is the fact that BT will offer 150+ hp both street and track drivable in stock form.

But, if you plan more, 16v or 20v... looks same to me. Maybe 16v is even better, much more people using it, more expirience, more parts..