radiator

2000 X, So just so happen to see some coolant on top of the radiator when I popped the hood, hadn't noticed any problems when driving so it surprised me, but I see everyone does the SC radiator, where can I find one? And where can I find the R34 radiator, may go that way , thanks!

Purchased 2007 Xterra S 4X4 AT 98,000 miles. CoParts special, salvage title, no rust, no codes (after some ABS Sensors and IPDM replacement), now it runs great, $1700 (4X4's are expensive in NW). Have replaced all fluids, Engine Oil, Front & Rear Differentials, Brake, ATF, Transfer, Antifreeze...