GT69

I went with Lentech when I upgraded from my C4 and I am very happy with it.
 
I believe Performance has a good rep too.
 
I have read about staying away from PATC but I do not have direct knowledge of their transmissions. I did buy my new cross-member and a couple of other components from them and that worked out OK.
 
I am not sure about the others, but Lentech re-engineers the valve body so the shift pattern works with the stock shifter.

Hi guys,
 
Just wanted to chime in here,First Off Mr. Linden Bruce knows his AOD's.  I'd listen to anything he has to say.  Smart guy, only wants to help you and has a lot of experience. 
Here is my experience with the AOD conversion from Mike's Transmission in Lancaster:
I went with Mike's Transmissions in Lancaster Ca.  I'm happy with the results but I did go back and forth with the flex plate, be aware your flex plate in the C6 won't work with the AOD.  At least mine didn't.  I had a custom flexplate made and re-balanced.  I didn't' counting on that and the transmission shop struggled a little with this.  I am happy with the transmission performance overall.  Set up the pressure correctly.  That was the hardest part for me.  Tranny was beefed up so standard pressure settings didn't work out for me.  After dialing in the transmission it runs awesome.  I have the 351C (approx 450+ hp) that had the C6 and swapped to the AOD for the overdrive.  I did this because of the 4.11 gears that had my car sound like an airplane taking off on the freeway.  Very close to the same gears but with the OD.  Torque converter is a 2800 stall and will rip my tires no problem.  Only problem I have is hooking up.  One thing I did is add a pressure gauge to read my transmission pressure while driving,  I did this so I can easily set up the pressure with carb adjustments, removal etc.  If you have any questions feel free to fit me up.  FYI-- I went with Mike's Transmission after reading an article from a mustang magazine on line.

If you mean the rear wheel tubs ,it is but not real easy .i have done it but is is a bit hard to get it to slide into the wheel lip 

Don't know what's required for the AOD swap.  But I do know in stock original form they are not very good transmissions.

Sure it would work, not sure why you would want to do that though. The C4 is a lightweight tough little tranny with a host of aftermarket parts available, the FMX is a 50s era design that is heavy and with almost no aftermarket support. Most people convert from FMXs to C4s or overdrives. It took me months to even find a replacement pan for my FMX on ebay.

Unless you're getting the FMX for free go with a C4 or AOD. I just swapped my C4 for an AOD and love it.
 
Matt

I had an FMX in two Mach 1s and i loved them ,a shift kit is as simple as adding a shim .I had both rebuilt from a local shop that does a lot of racing and never had a problem .

Adding a shift kit to an FMX is no walk n da park

In stock form the FMX is a lot stronger than a C4.  I've seen FMX transmissions take a beating and never have any issues.

HI ALL, POSTING FROM THE UK.
I HAVE A 69 AND WANT TO USE AN FMX WITH MY 347 MOTOR. WILL THIS WORK OK AND WHICH DRIVE SHAFT WILL I NEED. MANY THANKS
 

HI ALL, POSTING FROM THE UK.
I HAVE A 69 AND WANT TO USE AN FMX WITH MY 347 MOTOR. WILL THIS WORK OK AND WHICH DRIVE SHAFT WILL I NEED. MANY THANKS