Thx 911,

It's mandrel bent exhaust tubing, you buy it in a 180 degree U bend then just cut the bends and weld as necessary. Hence the unnecessary looking 3 welds in the tubing. summitracing.com has them for ~$20 per 180 mandrel.

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Jake, 15 years working on Toyota's for a living, self employed now- Landcruiser restorations.
1985 W123 300D CA emissions, 225K miles; deleted cat/oxidizer, all EGR removed
1997 Supercharged 4runner desert buggy
1993 Cummins D250 ~250hp 650 ft lbs, keeping it mild
1978 Honda CVCC Civic, the tiny collectable
1994 F350 4x4 crew (soon to receive the cummins)
2003 Tacoma DC, the wifes/camping
1983 John Deere 310C (Backhoe, for work)