The stock location is a port at the back of
the intake, it's on the #4 intake runner,
and not far from the throttle opener cam.
The Trans had a small can shaped fitting,
about 3/4-7/8 of an inch round, with a snout
sticking out of the end, I think this is a check
valve, tho I don't know what for, perhaps a filter ?
Where you have the vacuume hose routed
now should be fine, unless you want it to look
bone stock
Wild