The MP 484 cam is a bigger cam than that voodoo "268" cam by a healthy amount...even if it doesn't have the lift the the voodoo has.

241 @ .050 w/ 108 LSA for the MP vs 226 w/ 110 LSA for the voodoo...

The "voodoo" series has two cams in it's line-up, both available from summit that could do the job nicely...both MIGHT hit your goals, one certainly will.

The 60404 features 234/242 @ .050, .513/.533 lift, 110 LSA...with the mild porting, this cam stands a good chance of getting your ET goals provided the chassis is up to snuff...should be fine with your torque converter. With the aggressive ramps, it's should be comparable to the MP 284/484 cam in terms of power, but with better vacuum/idle, wider power band.

The 60405 will DEFINITELY get your goal (and perhaps more) and should have comparable if slightly better vacuum and idle to the MP 284/484 cam; but it'll make a healthy bit more power...specs are similar at 241/252 @ .050 on the split pattern cam, but with a wider 110 degree LSA (overlap is still greater due to the large exhaust duration vs the single pattern MP unit). Where this cam shines over the MP though is it's ramps...very aggressive (not the most aggressive; racer brown and hughes offer better...but the voodoo is probably the best you can exchange for at summit) featuring .533/.552. It's lift @ .300/.35/.400/.450 should all be significantly better than the MP unit as well...making the cam seem bigger w/o the all the poor idle/driveability of the MUCH bigger cams.

The caveat is, what springs are you running and are they suitable for either cam?