I've only seen a front heat-collector on FJs and a single tube to the air cleaner. These frequently rust off, fall apart, or are left off after a manifold gasket job. You can fab one with thin sheet metal, if needed - just make a snout to fit the hose, and a section that attempts to collect heat off the exhaust manifold.
They're pretty pricey at the dealer, if you can still get them.
Steve H. - KE0KNH
Colo Springs, CO
'78 FJ40, '89 FJ62, '98 4Runner