Are you getting a cam to go along with those AFR's? Here is my suggestion...As in regards to the AOD...I had one untill I converted and I strongly recommend you do this all in one time to avoid the charges of pulling your tranny out each time you want to add a new part to it...unless you can do that yourself...1st as someone already mentioned look into a lentech manual valve body...you will have to **** the auto just like a stick to get into the gears...Transgo makes a great shift kit...get that as well...You should really get a stall converter of no less than 3000 stall if you already have the tranny pulled...DO NOT go with B&M or TCI...Hughes is good and I think some people here like Edge stall converters...ART CARR and CONE are the best but price as hell...Now I use to have an AOD and had 3.73...not very impressed...I suggest goint to 4.10...unless you do a lot of highway driving than you should not worry about the gear...Also Stay away from the 75mm Bullet MAF...with your set up I would strongly recommend a Pro-M 80mm...you can get a big mouth inlet tube that connects from the MAF to the TB that way you will get the turbulent effect of the CAI for half the price and it will actually keep the air cooler than the MAC CAI...Pro-M has it right on their website...as far as TB goes stay away from
BBK/Edelbrock/MAC...get either accufab or Ford Racing...Mustangs already have a posi rear...Get a nice cam...I would suggest a custom cam from FTI for the AFR's to really wake them up...