Did you try to contact Revell, maybe they'd send you a new hood? A LONG LONG time ago I was building the Monte SS and the windshield broke, I sent a letter to the company, told them I would pay for it, but they just sent me a new one no charge.
THIS IS RIGHT FROM REVELLS WEBSITE:
"Revell's Parts Policy is in place to provide our customers with a quality building experience and was developed to assist with replacing parts that may be missing or broken. Please contact Customer Service at 1-800-833-3570 or cservice@revell.com to request a part replacement."