The one I was looking at is the Holley 80457S
model which is a universal 600 CFM 4 barrel
with electric choke and vacuum secondaries.
Brand new it runs around $275.00
which seems reasonable...
(The Thunder AVS 500 is around $350.00 )

Anybody use this one (holley)?

I have to use a 1" spacer to get this to fit.
on the MP Aluminum intake...

I've got the spacer and mopar "pieces" to connect
to the existing throttle linkage...

I understand I'll have to adjust the throttle
linkage to get this to work properly.

One more question I've got a 340 single 4 barrel
air cleaner... will this fit on the holley,
it looks like it will.... But I've never tried it

Anybody know?