the aod can be made stronger then any c4 or c6.

the e40d will take 1300 pounds of torque when properly built, so it can be nearly twice as strong as an aod.

i build and destroy aod's constantly, they last longer then my c4's ever could and still push my truck lazily along at 80 mph. since i run my truck off road hard theres not really a way for me to keep the tranny alive in hydraulically operated valvebody form unless i go to a 4r70w or a lentech setup.

the weak link in the aod, even if you put the 4r70w parts in it is the damn valve body. it has to do too much. the lentech unit uses the rev clutch along with the directs for 3rd and thats alot of holding power.

i have not seen a failed lentech in a street car yet. some with 380+ at the wheels + 100 shot of spray.

unless your pushin over 400 hp the aod will be fine with the addition of a baumann engineering shift kit. and some upgrade standards. in a tiny lil comet i wouldnt sweat it.