B-Series 4-1 was made (USA) as a manufacturing sample for mass production for DTR Design imported headers. CNC flange .049 1.75 stepped to 1.88 - 2.375 to 2.5 2 bolt flange High output B-20 will not clear full radiator core.
B-Series 4-1 was made (USA) as a manufacturing sample for mass production for DTR Design imported headers. CNC flange .049 1.75 stepped to 1.88 - 2.375 to 2.5 2 bolt flange High output B-20 will not clear full radiator core.