97 transmission question

Hey Guys,
I have a few questions about a possible transmission swap on my 97 Cobra. My current trans is the one that came from the Factory with the car (T-45 with 103K miles on it) that grinds going into 1st and reverse from a dead stop and grinds from 1st to 2nd and 3rd to 4th . Its also making an odd grinding noise in neutral . (Note: Steed Tri-Ax shifter installed). From reading throught the posts it seems the majority of you all believe the T-45 is a pos and should not be rebuilt but replaced. I would like a T-56 but do not have the means (money) to do that. So a T-3650 seems to be the route I'll take. I have a line on a T-3650 from an 06 GT that has 3k on it (bearly broken in) and was looking to swap it.

Here are my questions:
1. Can I use the same bellhousing as my 45, in other words...can I bolt up to my existing setup?
2. Can is hook this up to a mechanical speedo (96-98's have mech speedos)
3. Do the new T-3650's have the stronger synchros that a TSB fixed on some of the 04's and older?

Thanks...

Thanks Benny,
So your basically telling me to go for a 3650 from an 04 GT?

BennyBlown2v said:

The 05+ 3650's have a different tailshaft assembly, so that transmission won't be worth it. The bell housing from the 3650 will mate up fine with the engine, a 4.6l is a 4.6l, heh - but the T45 bell housing cannot be used with the 3650 gear box.

2. You will need a Dallas Mustang Extended Range Speedcal for the speedo to operate properly.

3. The 04's are supposed to have the "fix" applied from the factory, so yeah different synchros; the 05+ cars don't seem to have the "typical" 3650 problems (I've never had any problems with my 04 anyways haha).

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