Thsnk you for your kind words. The style is similar to the original but another Aussie pointed out that originally the louvres faced inwards not out. I can live with that and I don't mind being different.
I watch a show on TV named Full Custom Garage and usa show and IAn Rowsall who builds up cars and trucks and buggies did a similar thing to make a fuel tank. This is waht inspired me to have ago as he too made it look simple. To be honest it is a simple thing to do all you need is a couple of pieces of timber cut to shape and clamped together, then the right gauge sheet metal to dress over the edge.
The same can be said about the louvres although Ian went to a shop that had the right machine to do the job but I thought why not try to see if I can doo something similar. Believe me my first attempt was a failure, it did not cut the straight edge and just folded the test piece in half. So I cheated and made the cut using my angle grinder with the 1mm thick cut off disc in it. The rest is as you see it. Mind you again it was clamped for each time I went to make the louvre.
I am now considering making the fuel tank only a bit larger using the same proceedure. It will need to hold around 3 litres of fuel which should be enough for a full days work under load which will mean a full weekend of fun at a Rally when it all comes back on line. Still waiting for some critical parts to arrive, a ring set of 5 compression rings and one oil ring. A pair of new valve blanks so we can make them fit, the cam gear repair being carried out by a welder and the oil primer cup for the pre start up. Once these things are in place it should not take long to put it back together again.