i'm swaping the crank from a d15b2 in to a d15b7 should i replace all the bottem end gaskets(they only have 60k on them)or will the used gaskets be ok to reuse

 

when you have stuff like that apart, always replace seals (rear main, front main) parts that cost 5 here and 10 there will save your *** from leaking and having to tear everything apart again... job worth doing is worth doing right