Thanks for all the replies its good to hear from people with similar issues.
Its a stock subframe with a DSE front suspension kit and steering box.
The heads are Dart which run a 300th raised port
All this information was told when ordering the headers. The number1 tube hits hard against the box from the top all the way down the body and also hits the top control arm bolt.
I did change the steering box top bolts to mushroom head but made little difference.Not sure weather you can see in the pic but the header isnt even flush on the head yet it stiil needs to be rotated up which i cant do as its against the box and no gasket on yet either.On the other side number 1 tube is hard against idler arm rubber seal.
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