1098 head on a 948 engine

[sirrom]

What gain will I have fitting a 1098 head onto a standard 948 engine. I know the combustion chamber is different

[bmcecosse]

First off - you will need to skim it by 60 thou. It will give you an extra 4 or 5 bhp. Adding the camshaft from a 1098 is worth another 4 or 5 if you can find one .