[rsk289]

I'd be really grateful for info regarding toploaders in 289 street cars. I'm building a Kirkham copy of a 2000-series car, using a 5-bolt 289. Rather than try to find a T10, I have decided to fit a toploader. Now, there's a few of these...
Could anyone point me in the direction of some part numbers, dimensions etc. that should work in an original car? I suspect the trans itself is easy enough (dangerous words), but the tailshaft is not so straightforward.
Thanks
Roger