UPGRADE PARTSREPLACEMENT PARTSAUTO WIRINGTRENDING PARTS 20v 4age - Valve collet $4.00 4AGE & T50 - Starter motor upgrade adapter $95.00 Throttle linkage kits to suit 4age 20V throttles $150.00 8/16/20v 4age/fe- Oil-filter spacer elimination union $25.00 J160 gearbox - Gear shifter relocation kit $450.00 Flywheel / Ring-gear locking tool $25.00 Velocity stacks - 20V 4age Blacktop throttles $200.00 – $290.00 16 / 20v 4age - Oil pressure upgrade kit $40.00 TECHNICAL ARTICLES