Some great feedback here peoples; thanks very much..
I am a little perplexed as to why my engine builder in Brisbane said the standard head gasket was only good for 200kW though (now having read NitroDann's and others opinions). I might have to dig up the receipts / e-mails to confirm what i've got i.e. brands of internal parts and show you "the list"..
I've got an R35 to line up with when the SE is fully tuned, but me thinks (even the GTR in standard trim) it might be a bit too much to ask of the mighty SE. The Skyline is scary fast to drive but the MX5 is going to take fun to another dimension i reckon.
I believe i was the first to fit a Raptor Supercharger to my 1993 LE many moons ago got 140 whp (15 sec 1/4 mile) on 6psi with a Haltech fuel only ECU and made it in their Haltech calendar. Loved my last SP but wanted to do this SE build. I look forward to your feedback when i list my parts spec peoples. Thanks again.. John