Well yesterday I did hit my first starter motor snag. Although I have always intended to cut away some of the die cast sump as you may have noticed by the blue texta marks, but once I removed the sump and fitted up the backing plate I found that becaust the engine uses a through bolt at tha A series starter position, the solonoid of the starter fouls on the block.

Now at this stage I'm not worried about this snag. One option is to shorten the alloy boss on the block and tap it for a time sert (like a helicoil only better) and hopefully goin my access there. But as it is a structural part of the block I want to avoid cutting into any needed material. If this turns out to be the case then I'll explore the possibility of either a different gearbox like a CA or evenwelding a new boss onto the bell housing. Most likely another box as the whole idea of this project is to make it affordable and easy enough that anybody could potentially have a crack at it.
So I'm off to the wreckers today to have a crack at finding a flywheel. And I might start grinding the sump too.
One of the things that concerns me at the moment is the clearance around the main caps. As you can see it has a crank girdle incorperated into the main caps. From the sump measurements it does seem that i may have to raise the engine by 1cm possibly, those ribs at the rear are hollow and are strengthening for the sump as it applies some of the torque through it. I will be disposing of most of the lower section of the sump and retaining as much as possible.
As for the sump bowl position chris, it's nearly perfect. But it is about 2cm back from where it needs to be. My first thought was to cut and weld an alloy winged sump bowl to it but that may pose a problem as 3 of the sump bolts are removed from under the pressed tin bowl. Still not an impossible ask to get past. I already have a few ideas on that one too.