I have heard some bad things about topline oil pumps. You can google it yourself, i would go with nothing other than OEM for the oil pump. Its just not worth the risk. Also, FR-Sport has OEM rings for 90 bucks, id just go with those. ACL bearing set from ebay rods and mains for 45 shipped. 220 for a OEM oil pump at wholesale price.
Theres really no reason not to re-use OEM pistons unless they are scored up or dammaged. They are going to be better than aftermarket oem replacements.
I can sell you some good condition pistons/rods if you want, i have a few untouched OEM short blocks that are in good shape.
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