Headers for RB in A body

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----------motor plate here also. I had my engine parts race balanced at hughs, there is no vibration that's noticeable at all. I did make and install a for and aft linkage, or limiter for it tho. w/ that much h.p. and torque I`d think u need one too ! LIKE UR CAR ! tell us about ur internal engine parts. u running a girdle ?
Bob it is an indy aluminum max RB block. 4.5 bore 4.625 stroke. 14.1 comp.