I would suggest going to the 70mm tb as it will not require an adapter to jump down to 62.
On the intercooler, it has been demonstrated by a number of people that are knocking on the door to the 8 second quarter that a PTE stock location IC will work just as well as the big front mounts and it will have better throttle response in normal driving.
During a run, the ic is not exposed to air flow long enuf to provide any cooling by air flow. It serves as a big heat sink to pull the heat out of the charged air. Cooling comes into effect as one is driving after the run and air flow is passing thru the IC removing the heat from the fins/tubes. In fact a couple of guys have proven the fact by stuff the intake with towels and making a run which did not improve over the unplugged runs.
Now, if you were road racing continually, it would cool some, but, you would have to reduce the boost a lot to keep from overheating the engine oil and blowing the engine....in a ten second run, the core just does not have time to be cooled. If you are spraying alky, this further reduces the need for giant intercoolers as the alky cools the air down a lot by itself.....che mical intercooling if you will.
Added to say, the front mount will cool down a bit faster after a run on the street from more air flow to cool it down but this does not help during the run. It will also keep the AC from working as well when sitting at lights or after a run because of the hot air going across the AC condenser.
The PTE IC is very expensive compared to the GN1 unit. They tell me the PTE is better...but, if you are only running, tens, it may not be enough better to justify the price. The really fast guys do some porting on the inlet side coming from the turbo to reduce pressure drop.
Dan (Grumpy) can give you more information as Melissa has been running a slic for years now and was knocking on an 8 the last time I heard.
