ENDERLE UPRIGHT INJECTORS BAU4 & BAU5 BILLET INJECTIONS ENDERLE MAKES THE BAU5 UPRIGHT INJECTION FOR MEGA & MONSTER TRUCKS AS WELL AS ANY DRAGSTER OR LAND SPEED CAR THAT MAY WANT AN AIR FILTER FACING UP TO KEEP DEBRIS OUTOF THE BLOWER BELT - BILLET-K VALVE-PROGRESSIVE OR REGULAR LINKAGE - BLOWN-UNBLOWN