Thats a wierd old spec for only a 450 hp motor???
Whats involved in a head that spec???
Very strange to do all that but strangle it with a 2wd inlet plenum!!!
Fair does though forcing that much air through it would give you 450 hp though but imo not a well specced engine at all and crying out for a proper inlet plenum and map to suit...
Funnily enough iv just bought a car for myself that has a nms engine rated at 380 hp and must say it sems strong although smoking quite a bit after only 20 k so will check it out tomo on our dd rr to see if itd fuel related or just worn...
Will post my findings..


cheers danny