70 Duster T5 Swap

I've also bought a lot of parts from Astro Performance, and have always had good luck with them. Outstanding to deal with also.
I've used the z-spec gear kit and Astro rebuild kit to make a very solid T5. Had it behind a supercharged Fox Mustang making 446 to the tire. Ran it for years without any problems.
http://www.astroperformance.com/product_info.php/manufacturers_id/29/products_id/148
http://www.astroperformance.com/product_info.php/manufacturers_id/29/products_id/758