I have the MAF 6-1 headers, never had the truck without a header so I have nothing to compare it to. I have no vapor lock, no issues starting/warming up with a little choke and gas pedal pump. It's a great place to add chrome!
I do have a heat riser installed and I am fully desmogged.
I just put on a new one. Copper gasket sealer and a felpro gasket, sealed it up nicely.
My rig... "Maude"
1976 FJ40 with some stuff and some leaks.
1999 UZJ 100 Series bone stock ready to rock AKA:The backup minivan
2012 Toyota Sienna Minivan, fastest Toyota in the stable.
My camping trailer build up thread.
"You 80 guys are just a Sawzall away from nirvana." -Red Chili