and you need an Automatic starter ( mounts on passenger side of engine)
you will have Rad and alternator clearance problems .... and have to modify the downpipe if you go turbo ....
Admittedly I don't know what the "single seater mid engine diesel commuter" being built will look like, but I'm doing just fine using a stock Dasher starter in my setup. It mounts on the manifold side of the engine, under the exhaust manifold and beside the turbo. The stock Dasher diesel radiator is keeping things cool as well.
My Dasher is using the stock belts and brackets (AC compressor runs off the crankshaft and alternator runs off the AC compressor), Quantum TD exhaust manifold (the turbo is "beside" cylinder 4) and a custom 2.5" downpipe (a stock Quantum TD one fit perfectly, I just wanted a larger diameter).
(I have a stock-sized NOS Bosal downpipe for sale, should anyone need it.)
Regarding an LSD for 013: not available from Quaife or Peloquin. What we got as the VW Fox in North America 1987-1993 is built on the BX platform from Brazil and there they're very popular. I don't know where to buy from, but I know LSDs exist in Brazil.