can someone give me detailed instructions on how to cut out the anti reversion tube on this header? i looked inside but i can't see any welds that i could drill out from the inside. searched but didnt find any how to's

 

i know that you are able to modify the collector (which IB use to do it ) you should try to give them a call.

 

i would like to have someone do it for me, but unfortunately i'm in asia so my options are limited. any info will be greatly appreciated