Hey, Just my 2cents worth. Buy an inexpensive older quality car. The Losi XXX-S makes a great drifter and can be bought cheap. The weight distribution is great, it has lots of steering throw and its pretty tough. Parts are easy to get and inexpensive. Look on Ebay for drift tires. ABS drift tires can be purchased for about 10 buck (12 tires). ABS is 2 inch black drainage pipe and fits perfectly over most 26mm rims. You'll need to press them on pretty hard....I use a rubber hammer. You shouldnt need to glue them and when they get thin cut through them sideways and peel the old ones off. Get a good 19 turn motor (or go brushless)...you'll need it.
BTW, the rear spool diff is a definite.