Sooo... 99 and up contis have them correct? Are they worth it (functionability) and could they support a blower? And what other changes would need to be made?

same heads and cams as the cobra

You would need a C head style intake intake or maybe the conti intake adapters will work along with other parts to make this work. The heads do bolt up but it's not a straight swap. A couple guys have done it. IMHO after what parts will probably end up costing you and the time involved it's not worth it for stock heads/cams/intake.

from what i understand contis didnt have imrc either 99+. But with a strong bottom end and these heads theyd handle a eaton easily right, then whipple? :D

C heads don't have IRMCs but some(if not all) C head Contis have a B head style intake with adapter plates to mate to the C heads.

03+ intake ports are a little different but AFAIK you should be ok.

99/01 heads and 03/04 heads have the same shape/dimension intake port entrance, the shape of the port however is different once you get beyond the entrance. The exhaust ports are different, 03/04 ports are larger and rectangular in shape.

I'd like to see some of those 99 and up intake adapters.

I came across this.. http://www.modularfords.com/forums/showthread.php?t=85810 Could anyone point out any truth in that?