Are you sure the engine number isn't starting with a 56 and not 506? I only ask as I think it's a Corvette 2 from 1969-72 which includes 6 models 69VB-1-2-3 and models 70VB & 71VB victacode V65.Model 69VB had 5690 69VB-1-2-3 are 5691,5692 & 5693 and the 70VB & 71VB start with 5700 & 5710.I know this problem doesn't mean anything much to most but it tells me it's not the original engine.

Here for a good time,not a long time.