hiya what ever kit you use make sure its a sequetial system , single point is bobbins on a p38, try these guys , i bought my kit from them and they are first class Tinley Tech LPG Conversions - LPG conversion kits, LPG advice, LPG parts i fitted it myself no problem and its been spot on .
rick.
I'm from the south west and know of a couple of installers in this direction, but unfortunately probably not a lot of good to you unless you want to tap them up for some info.