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I bought these new from Nick Wilson. He put his MW port and polish on them. They flow 343@.700. Had my 3400 lb charger best of 9.77@139. They have had 2 light valve jobs since new, one of them was last week. No damage ever. 75- 80 passes ever. Comes with oil lines, ARP studs, comp 944 springs, and titanium retainers. 73cc chamber. $2650 plus ship from 43920.