Can you get a sequential shifter conversion for the datsun 71 series boxes? I seem to recall a company something like "IKEYA" (and I'm not getting confused with the home furniture construction kits 'ikea" ) - did conversions to sequential shift - I think for the toyota w series, who knows maybe the 71.

Whilst it isn't cheap, I'd probably go for a bellhousing at $1100. SO you could put '1' to the list of the required 20 minimum :) . If I factor in what a decent tig welder is going to cost me, it'll be cheaper to go the bellhousing (but I guess then I won't have a tig for other stuff!)