I am beginning to plan....
I've got an adaptor comming from DOncaster so I can fill up locally and at £2 a lb cheaper. that will cost £18. But I still have a £40 per 120 second performance cost. the benifit? TRUCK LOAD OF PERFORMANCE FOR LESS THAN A CHARGER... (untill I hit the 75 fills mark) then the Super charger is in profit!
Loz
Ps. never seen an S/C GS300. maybe I will have the first...