In the long run I think you will spend almost the same amount of duckets on just getting the upper/lower GT-40/Cobra intakes, I to have heard of the lower you mentioned, it seems rare and that it was only made for a short while so I think it would probably cost a little more than the GT-40 351W lower and take a while to find one.<br>Why don't you ask on the Corral if anyone is running one and see if they know the history of them, I for one would be interested in who MFG. them and when and what they cost when new and now used. Later, Francois.<br>