Engine swap
 

Looking at my engine, the PO said it was a swap from an 84' N/A because the original engine had a cracked head. What can I look for to see the differences? He said when they were replacing the seals he had to re-order because of very tiny differences in some seal sizes. So what do I need to lookout for?

I know when I did my front seals, I noticed that Pelican lists different seals for different engine serial numbers. I found the code on the rear of the block near the speed, reference sensors, on the top. I ordered according to the serial number as the serial number of the engine in the car indicated that it was an '85 and the car itself is an '83.

Sweet, thanks for the tip.