IBC'S INTERSTATE BAKERIES<IBC>BID OVERSUBSCRIBED IBC Acquisition Corp said it received about 8,857,807 Interstate Bakeries Corp shares in response to its tender offer for up to 8,053,181 shares that expired October 16, and it will purchase about 90.9 pct of the shares tendered. It said a final proration factor should be announced and payment for shares start October 26. IBC is made up of Interstate management, First Boston Inc <FBC> and George K. Braun and Co.