The intercooler is also light and since missile cars tend to crash, it’s not worth doing something super expensive here for the moment. In the future we are probably gonna chop off the inner fenders and core support for clearance and replace it with a tubular structure and at that time design something nicer but this will work fine for now. We have made well over 400 whp with similarly sized intercoolers on SR’s before so this will work for the time being.
We wanted to get a more free flowing exhaust manifold but didn’t want to spend much money to get an equal length long tube super optimized work of art. With cost in mind we called upon the guys from ISR Performance. ISR Performance used to be called ISIS, but for obvious reasons, they decided to change their name. The ISR Performance manifold is an inexpensive tubular manifold, constructed in stainless tubing with very serviceable welds. The tubing is super thick, close to cast weld-el in thickness.
The manifold has gusseting around the head and turbine flanges and is in our opinion not likely to crack. It pairs the adjacent cylinders in the firing order away from each other which is good. It is not equal length or anything but it’s much better than the stock manifold for flow and pulse separation.
Of course it isn’t the greatest thing and it’s not metal art, but what’s cool about drifting is you just need to make enough power, not the most. In this case our priorities are cost and crack resistance. I have personally made over 500 hp on way more cobbled together log manifolds on SR’s back in the day!