Just get you a set of frame mounts from a 73 and up to about 87 I think it is chevy truck. Then use your 3 bolt hole pontiac motor mounts and clamshells. I had to move the mounts about a half inch if that and it all lined up. I have a Pontiac 400 in a 71 C-20 with a longtail turbo 400. Was a piece of cake.
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