500hp 5.7? Whats it take?

Riddler said
Weird I spent $2000 for my 6.1L Hemi and it comes with 500HP factory. You keep your old tech.

Riddler

Here's a Riddle for the Riddler ;)

Below are two Statements. One is factual, on is false... you must repost the correct one.

1. Riddler is a hell of a fabricator and has alot of knowledge to offer someone considering a 3G swap.
or
2. 6.1 hemi's had 500 HP from the factory...

Let me know which one of those is correct lol