I'm guessing if you're wanting to mod it for drift it's probably going to be *cheaper* to buy one modded already - lots are imported this way.
I recently picked up a low km auto (figured chance of it being flogged was lower!) and intend to start from scratch. Gonna cost me more $$ doing the conversion / getting decent LSD / coilovers etc - but I'll be able to go for all parts in good condition and hopefully it will last me longer. (And I can pay for them when the budget allows for it )