i have but trying to keep it simple one or the other without a 2nd element,but with the car back on the road and boosted with 250hp its got more power then the current tires, coilovers and stock brakes can handle. and im more then impressed, so i think the original goal of 350hp is very achievable i guess time will tell once i build the engine and wind up the boost IF it even Needs more power.

yes. For the benefit of the majority of this board.

In Australia, the way we measure our octane rating is different to yours. Someone mentioned Europe. I think that's right but couldn't be 100% sure

What I am pretty sure of is your 93 is the same/similar as our 98