Pulled them from my previous motor. Seems like the center have some wear. Should I re use them? Anyone have a link to the fsm so I can measure also.

 

Why would you reuse them when you have gone through all the trouble to remove, break down, clean, inspect and rebuild your engine? Buy new seals.

 

 

Only reason I did not replace them is they cost $80 each. The top one has suspect wear markings on it which I did not notice until after I placed my rebuild order. Should I expect any trouble using new apex seals on used housings?

 

You can send your used housing to goopy to have them reconditioned so when you used new seals they'll have a better sealing surface thus better compression.