Manual Trans. for a 429

[cocbrazil]

Hi Friends,
I´m buying a 429 engine for my Cobra, but I would like put a manual transmission. The seller of engine said me somethings that I don´t know what is better.
I thinking buy a TKO600. There is another one better or that fits on 429?

Please could you comment about the text below?

"You will need flywheel for an internally balanced (no counterweight)neutral balance set-up.Please be careful about what you choose.I will help you get what you need,because it can get tricky. The engine block year isnt the important thing,but the crankshaft is.The crank was manufactured in 1969,and they were used only with automatics,so to use with a manual,you can go one of 2 ways,both will work.Either you can machine the crank for the 1.375 pilot bearing,or get a pilot bearing with the center hole diameter the same size as the input shaft size,and just turn down the outside diameter to 1.250 for an interference fit.I can also do this for you,this is what I did with my other 429 engine to use with my 4 speed top loader with big input shaft.I plan to use with my 184 teeth flywheel,however some say it wont work, I soon will know! "

If someone have another idea, please feel free to comment.

Thanks a lot,
Regards,
Cristiano