All of the manifold to cylinder head hardware is the same to include the spacers, now as far as the misc pcv fittings, im not 100% on as its been quite a while since i installed one, i do know if there are any brass inserts for the pcv fittings theyll be m6x1.0 by whatever length you may need...
Im still trying to get the time to get this done, my unit is currently undergoing a lot of training that has sidelined this project, as soon as i can get back to it ill post results.
It was recommended by lund that i upgrade to 47s prior to using e85, as the rpm and power production of the gt350 setup negates the headroom (lower power peak of the stock manifold) that was originally allowing e85 use on the stock injectors
For the most part but with lund being swamped and prepping for a 1/2 mile event ive backed off a little on the revision requests theres some subtle surge left but we're still working on it, i actually still owe him a datalog from the current revision im running, ive actually been a little...
The coupler was 3 inches in length, part number 2718 from vibrant performance should be right around 14 bucks, and if im not mistaken summitracing carries vibrant parts....i got mine at pepboys in their "speedshop" section
Using the stock tb, is pretty much negating the im swap, the gt350 tb is only 100 bucks more than the adapter (depending on where its acquired from)
As far as the intake, all you should need in order to use it with the gt350 tb is a straight 4inch coupler
Yeah that sounds as if the thermostat wasnt "even-flow"ing...seriously sounds as though the opening temp was off because thise are stockish temps, based on the components used in the reische 170 im sure its a better piece
I'm running an awesome duralast (autozone) 160 degree thermostat that cost me like 20 bucks and have no issues whatsoever cylinder head temps creep up to 190 on a full rpm hit but remain around 170 to 180 ish while cruising (depends on ambient).
The key is to properly bleed the system.