1-5/8" Big Tube Ultra Heater Box Only Type-4 3/8 x 16 Female thread

3/8 x 16 Female thread on the base of each light

25 Rocker Arm Assemblies with Stock Style Shafts

This will allow the installation of a 5-hole pattern wheel onto a 3-hole pattern mount

Engine size: 1600cc

This bolt-on (no machining required) stack outflows stock by over 20 cfm

1-5/8" Big Tube Ultra Heater Box Only Type-4 3/8 x 16 Female threadUntil now the classic VW enthusiast has had to make the choice between running a high performance 1 5 8" exhaust header system or to keep a functioning heater in their car. Well friends, the day has come where now you can have the best of both worlds withAC Industries'new 1 5 8" Big Tube Ultra Heater Boxes! AC Industries' 1 5 8" Big Tube Ultra Heater Boxes are the only performance production heater box to feature a premium O. E. style cast aluminum