Small Block 10.5" Bellhousing Inspection Cover

Small Block 10.5" Bellhousing Inspection Cover for Manual Transmission,
I can buy a new one for $49.00 without the bolts....
http://www.passonperformance.com/co...page_images.tpl&product_id=253&category_id=42

Could someone tell the size of bolts needed if i was get the new one from them.

Thanks

Or if someone has a nice one that they want to sell with the bolts I may go that way also.