The coolant leak proved to be the least of the issues. The freshly rebuilt engine never got oil pressure. I cracked it and sourced a second hand 308 and the van is now running with V8 power and moving in and out of the garage under its own power. I am in the process of fitting up all the seals and the interior of the van. Hoping to get a new exhaust fitted some time in the next two weeks. Have fitted a little amplifier in centre console under the selector indicator assembly that is wire up to allow an iPod to plug in and have built a storage box that lives under the passenger's side floor of the van that has a auxiliary battery and ARB air compressor mounted in it for when I am away servicing rally cars. Hope to have the van on the road by October as I have committed to taking the van to Victoria at the end of November for the Alpine Rally.