I have found a nice gt40 setup at a junkyard, I know I'm grabbin the upper and lower i/m and the heads. I know the throttle body is bigger but needs to be modified. Is the maf any bigger? Should I at least grab the housing peice from it, and put mine into it? I can put a cone filter on it that way... The car is from the whole cash for clunkers thing. I know they run the glass silica stuff in it to destroy the motor, but I was wondering if the heads get damaged from this as well? I dont want to waste my time pullin them just to relize they are destroyed? Does anyone know for sure??? Thank you, Bobby.