Twin Holset HT60 which have very similar mapping to Garrett GT4708 (81mm), Precision Turbo ice water intercooler, with a very, very large reservoir tank (partially to act as ballast). Turbos are mounted where the passenger would sit in such a way that a catastrophic failure would not injure the driver. Actually the turbo location really worked out nice and everything is easily serviceable. As a result, the engine compartment is very uncluttered.