the loom is in 2 pieces one the front loom from passenger seat back will be differnet lenght and has a few extra wires for central locking, door light switch. the front half of the loom will fit fine. its an easy swap pull seats out disconcet from hand brake light switch, pull the dash out and unclick and plug everything. unbolt the fuse box and disconect all the plugs in the engin bay and pull its all out through the cab side of the firewall. verry easy. there were 2 difent engine mounts (2 bolt and 4) you can mix and match if u have too but its easyer to stay with the same set up. another difenance will be the bell housing on the petrol there is 1 bolt hole missing for the starter moter (pertol has 2 bolts diesel has 3). OR you can keep the existion petrol loom ther is a bit of messing round to set up a glow timer system. you can but a bogaard one for about $200 (thats the glow timer) and wire that in. or just set up a push button. (push n hold 5sec? for cold starts) the taco set us is differnt on the pertrol it comes from the disy and diesel from injector pump oil presseure senders + temp senders are the same so you can just plug them strait in. IMO change the looms its much easyer. its verry easy to DIY just sit the cars side by side and change one thing at a time if your not sure.