Wordpress Loop: Insert Content After Specific Post Number - wordpress

Question

I am wondering if there is a way to insert a block of content after a specific post number in my Custom Post Loop.
Essentially, I want to say:
After the 2 most recent mosts, insert this block of code.
If that can be done, I would also be interested in knowing if something like this is achievable:
Start a Custom Post Loop that excludes a specific Post Format (or Category), but after every 2 posts, insert 1 of the excluded Post Formats.
Thanks for any assistance.
<!-- #STICKY-POSTS |begin| -->
<section id="sticky-posts">
<?php
$args = array( 'post_type' => 'portfolio', 'posts_per_page' => 2, 'cat' => '8' );
$custom_query = new WP_Query( $args);
while($custom_query->have_posts()) : $custom_query->the_post();
get_template_part('format', 'standard');
endwhile;
?>

Answer 1

Do something like this:
<!-- #STICKY-POSTS |begin| -->
<section id="sticky-posts">
<?php
$args = array( 'post_type' => 'portfolio', 'posts_per_page' => 2, 'cat' => '8' );
$custom_query = new WP_Query( $args);
$x = 0;
while($custom_query->have_posts()) : $custom_query->the_post();
if($x==2) {
display your thing here.
$x=0;
}
get_template_part('format', 'standard');
$x++
endwhile;
?>
Unless I botched something, x=0 will turn 1 at first normal post, 2 at second normal post then return true on the if statement, got back to 0 and rinse repeat.