Cheers
Left :rasp:, A common thought is that the 318iS's came with LSD's, regrettably they didnt so trying to source a 3.91 LSD, best option would be a 4.10 but they rare as rocking horse s**t.
I'm going to be running it on a V3 Mega Squirt system (name always alarmed me lol) supplied by a local firm, very good system that you build up yourself so will learn alot with that and also comes with software to map it yourself