Theres a supercharged car for sale now at £12 to 13 K. I would be tempted to go for that now as thats what it going to cost in the long run.
Happy shopping :-)
Nigel Baines
MG ZT 385 SE Starlight Silver Reg 29 Sep 04 Vin No 496 `Roush Supercharger fitted 07 Feb 11`