If you refer to FRPP book pages 4&5 you will note that M-6007-XB3 or XE3 is 345HP GT-40 AL block--$3500. The 270HP M-6007-A52 with GT-40 heads and valvetrain, racing cam etc lists for $2795. Granted that these prices are slightly higher, my experience suggests only 10-15% higher. Seems $2199 is a little low or the 340 HP claim is a little high.
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