Cast headers. (modified)

I've been plagued with header leaks on the truck,the cheap generic 'block hugger' manifolds are distorted so in an attempt to lead a quieter (and safer) life i've opted to fit these.

Original Chevrolet manifolds from a 289.c.u. small block.

I've modified the LH one by removing the cast generator mounting boss and on the RH side removed the factory pre-heater and blocked the resulting holes.

I'll need to have the downpipes adapted to fit the smaller mounting flanges.

 

Done