I decided to use aluminium for the cowling bowl and was wondering how to shape it without going to learn how to use an English Wheel. I found out that a local pilot had a large press. If I made a pattern, he could press the aluminium around it.
After much fiddling about I decided the pressed cowl bowl was not going to fit without some major modification. I decided to use my original front end. I could use the pressed cowl sometime in the future.
I carried out some taxi tests and found the cylinder head temps and oil temps were a bit high so I had to do a bit of a re-design of the baffles and cowling to incorporate an oil cooler. See here.