396-454 BBC Headers, Fenderwell Exit, 4wd & 2wd, 69-91 Blazer

396-454 BBC Headers, Fenderwell Exit, 4wd & 2wd, 69-91 Blazer.  2" Primaries with a 3 1/2" Collector.  Headers come uncoated, bare steel.

Will NOT clear factory A/C

Does NOT require any body lift

Head flange is 5/16" thick, port opening 2.031" round, primaries 16 gauge mild steel.

**Intended for racing and off-road use only**

Note: Please allow 4-6 week build time.