From your description, you have an 8(a) requirement and I assume you have already offered it up to the SBA to do an 8(a) acquisition.  That would mean you would follow FAR 19.805-1 requirements.  If the anticipated total value of the contract, including options, will exceed $7 million for acquisitions assigned manufacturing North American Industry Classification System (NAICS) codes and $4 million for all other acquisitions, you must compete it unless an exception applies.  If under those amounts you can do a sole source 8(a) for your requirement.

Depending on the dollar value you would either have to compete this as an 8(a) competition or do an 8(a) sole source.  Talk with your Small Business Specialist and SBA Procurement Center Representative if you have questions ont he 8(a) process.