TWM Intake manifold issues

[Dtsnlvrs]

I stand corrected....my memory is getting to me these days.......all the factory Z manifolds ARE the same thickness...the issue we had was with the Datsun Comp headers on the 510...they used the typical, albiet wrong, 10mm flange. FWIW Pacesetter, Stahl, and Clifford all use / used the 10mm flange, and called it thick. The 6-1 Header that MSA and AZ-Zcar sells is the correct thickness, but is a shitty header imho...it does not fit the car well unless you have old worn out engine and trans mount bushings...if it is all new, the collector is in perfect alignment to the trans mount crossmember . the ground washers are a compromise....plus, I can buy the Jet Hot Coated Pacesetter direct from Jet Hot for less than au uncoated Nissan Comp header (which scrape the ground easily).

[Tony D]

You can buy the header flange alone from MSA, and have it put on your uncoated header and have something like the Japanese have made for 35+ years: something that fits the first time both on the head, and down below.