What is the bottom coated with???
WE sprayed it with Box liner and then painted over it, to try and keep some of the rock chips down and it does help a bit with the noise.
thanks for the comments,
we are building another one right now aswell........ should be just as cool we will have it finished this summer. it has an all aluminum 540 with a hogans all under the stock flat hood tko600 max G chassis.