My version of a top mount TD42 intercooler.

Oh Oh, Truckster's going to be very jealous of this one.

We have been building this one for a while, it's an extended length custom core using the original endtanks apart from cutting off the relatively small tubing on the intake end and replacing it with 2.5" 64mm tubing.
Finally got to fit it today, the rear sits in the original position and all the original piping bolts up as they normally do. The front mounts are custom as I had to cut the original bracket to allow the inlet tube to pass through the the mounting bracket that runs from the firewall to the radiator support panel.
Piping from turbo to intercooler is obviously custom and expands quickly up to 2.5" 64mm right at the turbo outlet.
There is room to access both oil filler cap and power steering reservoir cap without any difficulty.
The customer will try it out both on the road and dyno's and do some back to back comparisons with the standard intercooler which can be refitted at any time within about 10-15 minutes.
Once we have some usable data we will look at either converting it to water to air or build a new water to air intercooler in the same configuration.
Regards Andrew.