You will want to look for;
1991-1994 Sentra SE-R …B13 chassis
1991-1993 NX200 (not NX1600)…B13 chassis
1995-1998 200SX SE-R…B14 cahssis
FWD, w/ LSD. $2000 for a really decent B13 chassis. $1500 in suspension, $300 in brakes, $200 in tires, $100 for a spare set of stock rims= $4100
That leaves you $900 left over to learn how to drive it…