Thanks for the responses all!
There is plenty of free space around the Victors, just not right above them =). We should be okay since there is opportunity for cool air to come in from the sides.
The points made about accessibility are well taken. I know it sounds crazy, but the reason we're making the clearance so small is in an effort to make everything much easier to get to

.
Hopefully we'll have some pics of Team188's finished 2005 electronics board early next week!
-SlimBoJones...