These are great for what you are planning to do. Summit does not stock the sanding rolls but if ordered will get them to you on the 18th. If you are just shaping and cleaning up the ports they will give you a nice finish.
http://www.summitracing.com/parts/sai-716296/overview/

http://www.summitracing.com/parts/pow-pow351480

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time