98 gt, heads and trans

I'mnot sure about the heads and intake being a direct swap, but I know for sure that the cross member for the tranny will not work. When we did this swap to our 98 we had to custom fab one that would work. To our knowlage there was not a aftermarket company selling the cross member that we needed. Here is a link to the car:
http://classifieds.stangnet.com/showproduct.php?product=44823&cat=18
Maybe you might want one that is already done