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If you get a billet drum in there ... just use the MINIMUM "protection" that is required. You do NOT need that super-high-dollar and/or fancy-stuff since with the special-drums there is no possiblity of the trans ever coming apart.

I think you will need a shield no matter what is inside your trans in order to pass tech, it looks like 10.99 and quicker. Check out this link http://www.nhra.net/content/about.asp?articleid=34603&zoneid=101