hi to all, i have a 4.6 rr p'reg 1996 P38 which i have done loads of upgrades ie l322 convo ect ect. Now as we all know they are very heavy on fuel! I have now just bought from D Hales salvage (delivered today) it's a y'reg 4.6 stolen recovered. It has a gas kit on it which i want to put on my...