b4 I start I should explain one thing.......
There are 2 main types of mixers/converters....
1; complex mixers/converters
2;simplex mixers/converters
a complex converter works with simplex mixer only
a simplex converter works with complex mixer only
what you have is a "hartog" converter.... it needs a simplex mixer IE: with this converter all you need is a gas ring that sits between the carby and aircleaner. ( one with twin inlets to match the twin outlets on the converter)
that said now down to the guru/gods words of advise.....
1; if money is not a consideration..... go gas injection
2; if money is a bit of a concern....... go "New Generation Gas Research"
3; if moneys a major concern .......... go with a "Impco" / "Landi" setup
4; if money is non existant................. get a gas ring for the "Hartog"
1=$1200 and up ....
2=$500 is a start ....
3=$200 at the most ....
4=$75 !
John said the Hartog would work ok but..... he'd recemend that you pull it apart an look for corrosion as they are prone for it, fit a rebuild kit to it if you can find one as they are scarce as diamonds in rocking horse shyte. Problem with the hartogs is that they are a tad old in their design and mainly seen on forklifts these days. Part availibilty is non existant and if your running sole gas when it lets you down ....hook up a tow rope!
He said the "Impco 300A" was a good choice and most wreckers charge around the $150 mark for a complete kit minus tank, but if your looking for a bit better performance for a few extra bucks then look for a "Landi SM90E" kit ( bout the $200 mark from a wrecker minus tank).
Both the Impco and Landi kits will no doubt need an adaptor that fits onto your carby unless you find one off of the same motor/carby, the adaptors sell for around the $50 mark each.... some are dearer like ones for 4 barrels ( $95) and some are cheaper ($30) thats new prices not 2nd hand.
The other consideration is do you want a "snorkel" setup or "directly over the carby" setup, This will depend on the amount of room between the bonnet and the top of the carby, most holden V8's say in a HQ run a "snorkel" setup ( big elbow off of the carby, long tube to the mixer which sits upside down) they run this because there's no room under the bonnet. If room is not an issue then get the direct on top adaptor. I run one of these on the V8 patrol, works a treat !!
I can get some pics of the Impco setups if you need to see what I'm talking about ( both snorkel and directly over models) as there's one of each in the shed at the moment and the missus bought a digi camera
next question .............
kingy