[mickmate]

The bump measures 26" wide, 5" high and is 1 1/4" deep at the top, all the folded over edges for attachment tabs are about 3/4". If you center it in the rear bulkhead 2" down at the centre from the underneath of the cowl that should be good. If anyone needs help making them I have them but you should be good with numbers to make them yourself if you have the capabilities.