I would try to pick it up if the price is right. Even without original motor it is still a 1969 BB camaro. The dealers sometimes installed what they had under warranty instead of ordering the original motor. In those days that was considered and up grade. Some of the 69 Z/28's received LT-1's also for warranty. Original sheetmetal, paint, correct origianl bolts, brackets and interior is what I love to hear also.
