I was never a fan of having to cut through the chassis to run the speedometer cable (no offense, Dan). After quite a bit of research and ultimately a huge stroke of luck, I found a 90 degree (almost) angled adapter that is compatible with the T50. It's off an 81/82 Cressida. If ebay still has the pic up you can see it here:
http://www.ebay.com/itm/271037927830?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
I have also found the actual Toyota Maintenance Manual for the T50. Please let me know if there's a good place to post reference material. I will email a copy to anyone who wants it.
Ciao! - Jim M
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