A-Z index on Custom post type

Hi Im using the following code to create an a-z list of a custom post type.
I need to add a link to the title and dispaly the Exceprt too, but am unsire on how to include this into this function.
Could anyone help?

Many thanks

<?php

$AZposts = get_posts(array(
    'numberposts'     => -1,
    'post_type'       => 'bha_issues',
    'orderby'         => 'title',
    'order'           => 'ASC',
    'category'    => $cat
));

$current = "";
$nav = "";
$postlist = "";
foreach($AZposts as $AZpost) {
    $firstletter = strtoupper(substr($AZpost->post_title,0,1));
    if($firstletter != $current) {
        $postlist .= "<b><a name='$firstletter'> $firstletter </a></b><br>\n";
        $nav .= "<a href='#$firstletter'> $firstletter </a> ";
        $current = $firstletter;

    } ?>
   <?php $postlist .= $AZpost->post_title . "<br>\n"; ?>
<?php } ?>
<?php
print $nav . "<br>" . $postlist;
?>