John Turner

Hi P ail, I just came across your thread and found it interesting, I am finishing off an 88" Pica spi and plan to fit my 3w50 engine in it, my prob is same as yours with exhaust, what gauge copper did you use and looking at the pic I can't see how you tighten screws into engine exhaust port with your curved sheet of copper covering the bolts? Has the exhaust held up after time? Thanks Paul, John