Hi there I'm looking at getting a new engine for my '66 coupe. I'm looking at a 351W or a 390. I'm not sure if the 390 will fit in the stock engine bay. I'm saving up the money and wanting to get the engine all ready to go before I go on my deployment next year with the Navy and when I get back I will redo the drivetrain for the car to handle the new engine. What would be the better of the two in the long run? I'm wanting to do this right and do it the first time. The last time I rebuilt the 6 cylinder but now I want to but the big V8 into it. Any input would be great.