Odd. The cylinder head and exhaust manfold gasket have the same part numbers for the FP and FS (at least in Australia). I have a Header designed for the FS 2.0 on my FP 1.8. Fits fine. FS block is 9.5mm taller than the FP to fit the longer stroke.
Could the AC compressor be an issue on the 1.8 if it's a tight fit on the 2.0 with an MSP style S-pipe? I never confirmed that before I had to sell my kit.
So would it be acceptable to run this on a stock motored msp with a good tune and respectable amount of boost or are we looking at something you have to have a built motor for?