Almost all of the early RA manifolds only came with 3 bolt holes & they would tent to leak & warp a lot easier. These are good for someone looking for original numbers but if there going on a car that will be driven on the street with normal miles they will be hard to keep from leaking & warping. As far as $$ these may be worth $ 75.00 to $ 200.00 each depending on how bad some one needs them but your guess is just that a guess on those as most want the 4 & 5 blot manifolds because the seal much better. Plus the new ones because of the better metals used in them don't seem to warp any where as bad os the old 3 bolt ones.
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