360 4 speed swap help

I am in the middle of doing my 4 speed swap and Im having problems with my crossmember. It looks like Im going to have to fabricate something with it because the header is going to hit the idler arm due to clearance issues. So with this my crossmember needs to be modified. I am just throwing this out there to see if anyone had any other kinds of problems converting a 6cyl car with this. Any help or insight on a similar situation would be extremely helpful.

Thanks,
Joe