Okay, I don't know what the VB license says about doing this, so use it at your own peril.
All you need to do is add another column of table data to the footer. I re-adjusted the proportions of the footer to 20/80***37;, and you can tweak it from there if you need to add more links to the right side,
The bottom of this code is the bottom of your corvettemechanic[1].htm main page. Work your way up from the bottom to see where the changes need to go on your page.
<table cellpadding="6" cellspacing="0" border="0" width="100%" class="page" align="center">
<tr>
<td class="tfoot" align="left" width="20%">
vB version 3.6.3
</td>
<td class="tfoot" align="right" width="80%">
<div class="smallfont">
<strong>
<a href="http://www.corvettemechanic.com/forum/sendmessage.php" rel="nofollow">Contact Us</a> -
<a href="http://www.corvettemechanic.com">corvettemechanic.com</a> -
<a href="http://www.corvettemechanic.com/forum/archive/index.php">Text Version</a> -
<a href="#top" onclick="self.scrollTo(0, 0); return false;">Top</a>
</strong>
</div>
</td>
</tr>
</table>
</div>
</form>
<div class="smallfont" align="center">
<!-- Do not remove this copyright notice -->
<!-- vB version 3.6.3
<!-- Do not remove this copyright notice -->
</div>
<div class="smallfont" align="center">
<!-- Do not remove or your scheduled tasks will cease to function -->
<!-- Do not remove or your scheduled tasks will cease to function -->
</div>
</div>
</div>
</div>
<!-- / close content container -->
<!-- /content area table -->
<script type="text/javascript">
<!--
// Main vBulletin Javascript Initialization
vBulletin_init();
//-->
</script><!-- Powered by vbadvanced -->
</body>
</html>