Cheers for the reply, I've done a lot of research on it and been looking around this site for the last couple months.
I've asked a fair few mates that are mechanics and i'm getting lots of yes's and a lot of no's about if it can be engineered, so when i have the car and before i buy any engines i'll start ringing up places.
ca18 was my second choice to go with and a lot of the conversion on this site are complete rebuilds going over everything so it's a tad hard to find what i really need to do.
At first all i'm going to do is engine conversion and new diff, then as time go buy i'll be doing much more eg. Coil overs,brake upgrades, etc...

In the end this will be my daily/I'm going to use it for drifting every now and then.