Topgear made some straight cut gears for a 56 four speed. I have herd of rally gear sets being available for the dogleg 60's, but they were like $2K or something ridiculas like that. With the prices you guys are paying for your 5spds, there'd be a dollar or two to be made in sending them over there.
I sold three 60 five speeds a bit over a year ago, and made just under a grand. From what I'm reading here, I could have got that much each for them in Aussie.