Has anyone used this one? Could you tell me anything about it? Supposedly it’s a universal chip.

 

305? 1989?, I don't think you will find one.

 

Don't do it. At best it probably just fools the IAT sensor
to make it pull less advance.

If it were me and I didn't live as a Smog **** serf
I'd be pulling the intake manifold and everything
attached to it, get a Holley Performer and a carb of
your choice and a HEI distributor (if the dist on this
one has computer meddling) and do a clean old
school swap.

Of course for all that retail money you could probably
fins a used running SBC350 good to go for half the price,
and drop it right in.

Especially if you're on the right side of local "smog exempt"
for vehicle age, or fortunate enough to live where they
don't test and inspect for emissions equipment.