I used Hedman long tubes for a D port 67-69 Firebird on my 63 Catalina and the passenger side fit so easy you can stand back and toss it into place ..LOL The only fitment issue I had was on driver side the #1 cylinder tube hit the crossmember and well since it was a drag car I just cut a V notch out of the cross member with sawzall and welded plate inside to box back in , the steering tie rod end stuff is real close to maybe rub a little with full turns and you might have to clock the clamp bolt different for some room but really it was just the one tube on #1.. mind you I am NOT using a old 64 and earlier trans or block. I am using a modern TH350 and a 455 block so a block mounted starter obviously. So fitment might be a issue with a early trans with bell starter
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63 Catalina coupe 455 budget drag car 11's 1/4 , 7.4 1/8th
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