904 freshening ?

Hi tranny experts out there. Several questions:

1) I will be installing my 318 and 904 trans in my 66 dart sometime this spring. The trans was rebuilt using stock pieces, and rebuilt stock converter about 9 years ago, it was run in a car for a short while.. less than 500 miles, then yanked out and has been in my clean dry garage for the last 8 1/2 years waiting for this chance to live again.

2) The motor will be making somewhere around 300-350 hp. Are there any issues with installing the trans as is and running it after having sat for so long? I plan on changing the trans fluid and filter, and draining the torque converter as a minimum.

3) Any thoughts about the durability of this trans in this application, should it be beefed up ?

Any replies are greatly appreciated !

:salut: