I posted on here a while back for some info on a Gen III motor swap in a TF and no one replied. I did the TCI mustang II front and originally set it up for an old school SBC. I changed my mind got the conversion mounts and it went right in. I will tell you the factory exhaust will not fit unless you want to cut into your frame for clearance. Solution LS block hugger headers or some say F body headers but I have no way to confirm this. Also the factory A/C bracket and compressor hits my motor mount. Try this company,
http://www.kwikperf.com/lsx_ac.html for that. With the new trans mount at a fixed height it barely contacts the trans cover, so a little modification it will work. If you position the block all the way back you can easily clear your stock fan from the rad.
Thats about where I'm at, now its time for the harness, computer, fuel delivery system, etc...
P.S. I you find any swap writeups let me know, I couldn't find anything for a TF swap.