Comparing the new 3900 with the old 3800. first off does anyone know y they stopped the 3800? all of GM used it so its not like it had to go bye bye with the pontiacs. Now if i read correctly the manual transmission from the G6 is what ppl are putting in there GPs. is that correct? whats the difference between the 3.8 and 3.9? it looks kinda the same. do they make superchargers and stuff for it? i did a little research and didnt find much on it. lemme know what u guys think