Quote Originally Posted by BillsGU View Post
Lots of things to consider. The advantage of an IC upgrade depends on how you drive, where you drive, load you are carrying / towing, etc. In most cases the advantage gained is minimal - especially when you consider cost and complexity of some installations. I went for a Top Mount aftermarket IC (only because my crappy original Nissan one leaked) and had lots of problems initially with it fitting properly - among other issues.

If I had to do it all again I would have taken the original IC and had a more efficient core TIG welded onto the existing ends. Good value for money and everything fits as it should - and it is easy to do.
Recently took mine for a long run to Carnarvon Gorge and noticed EGT's getting up to around 600 uphill. Not towing, but packed to the rafters with camping gear and beer. I will never tow, but am keen to do a lap of Oz at some point and am concerned about high EGT's. If I need to spend some coin to get it right I will, but if there is a quick and cheaper way to go, to get these EGT's more stable, I'm all ears.