So the first thing I tried after a forage at pick a part was an auto bell housing, to see if anything alligned up. As I was in between Datsuns at the time I had no gearbox related items to check out for compatibility I had to do a little scrounging.
I found that the 2 dowell positions of the A series bell housing matched perfertly along with 3 of the 4 main bolt holes of the block. The biggest problem being that the CR block used 4 x M10 bolts as apposed to the A series used 6 x M8 bolts. I was off to a good start.
To make this conversion interesting I've decided to stick with an A series gearbox to get everything sorted. It makes sence to me as it has to be as simple as possible to keep things cost effective. But you never know what direction it might take.
I ned to find a flywheel, as the CR14 did not come to Australia in manual if might be a problem. Or not. Apparently there are a couple of model flywheels that fit. I'm off to pinch a part tomorrow to track down something that fits.
I put an A series backing plate up to the back of the CR but as the plate fouled on the rear main assy it was a bit hard to see perfectly but by all indications it told me that the spigot centers were perfect. So today I cracked out the angle grinder and took out any un nessicary material. Then drilled out the 3 8mm holes to 10 mm to see what would happen.

Then drilled out the bell housing of a 60 series 4 speed.

But at first it would not fit, it turned out the spigot was fouling on the crank as it's not deep enough due to the fact that FWD manuals do not use a spigot as the inpus shaft is supported front and back in one piece. So I took off approx 10mm to get it on.
Bam. It bolted straight up. And further inspection found that the spigot is pretty much perfect.

