ok so this isnt gonna be a "grand prix with 3.4 pulley and supporting mods" kinda thread but more realistic "what if" cars.
i have a few ideas on what GM should have built:
05+ bonneville GXP compG 5.3 v8 and tap shift
04+ grand prix 3.8 na AWD trans from aztek. not crazy HP but give a good run on the auto cross. trans has same bolt pattern i checked
04+ grand prix with 6speed from G6
G8 with aluminum engine block instead of iron block v8
park avenue ultra with L32 RWD = beastly roadmaster
comment on my ideas or post your own