D/Darts -- Info and requests

Back in 1965/1966, the only header company that produced 'under-chassis' headers
for the small block A-Body Mopar was Doug.

Everybody else was producing fenderwell units with 1 5/8" diameter primary tubes
and 3" collector openings.

Doug Headers had a set of 'Tri-Y' Fenderwell units, that had 1 3/4" diameter 'primary pipes' that fed into
a set of 2" diameter 'secondary pipes'. Each section had a length of approximately 16". For
a total of 32". That was fed into a 3 1/2" diameter 'collector' which had a length of 8".