Well since you asked, I have gone though 3 versions of my current intercooler charge pipe setup. Version 1. 2" pool hose with 90 elbows routed about the longest way that you can imagine (from beside the alt. under the car across where the front bumper is up by the powersteering res. back towards the fire wall and then finally to the intake) net slightly better egt's then stock and max boost in third gear up 'test hill' (note same hill as I always use using same procedure as I always use to test my new mods) net result max boost of 23 psi @ approx 3900rpm. Next version same as above but using mandreal bent exhuast tubing welded with two silcone conectors for system flex. Net result max boost 23psi @ approx 3600rpm with about the same egt's (in safe area so didn't pay much attention) Third sytem back to pool hose with crappy 90 elbows but, now about a foot longer hot side and about 6 feet shorter cold side. Net result max boost of 23 psi @ approx 3200 rpm. Fourth version in progress about a foot shorter then 3rd with 2" mandrel bent exhuast tubing. In the mean time version no intercooler back to stock rubber elbow. Net result max boost of 24 psi @ 2900 rpm (and the car feels way quicker through out the rev range) egt's still in the safe area. Now considering leaving it like this till either I get my pump tweaked for alot more fuel, or till I can afford a sperco intercooler.As for AntonUk, deepmud is correct you cannot swap the head.As for deepmud the pumps they are swaping are still DI pumps but are fully mechanical, idi pumps do not create the pressure needed to opperate the DI injectors.