Advocator

tell me if I'm wrong but with the current L24 trans and and original L24 motor it seems to top out around 115-120 but driving it down the highway at 75mph's it was running at about 3200-3800 rpm's and doesn't feel healthy. With a bigger motor and same trans I'm afraid of a complication with reliability

the current L24 trans would bolt right up I do realize this. But I'm looking for a 5speed auto trans not a 3

After years of letting it sit I've purchased an L28 for my dads originally owned 1971 240z but in his stubborn ways he refuses to change it to a 5speed and loves his automatic trans. I've agreed to go along with his idea but I'm trying to find out what are my options of putting an automatic trans that will bolt right up to the L28. I've looked around the forums and done some other research but was unable to find an answer so here I am looking for help. If some cutting or extra work needs to be done I've got a friend helping us with much more experience than myself but I need to know what will and won't work.