https://www.dieseltruckresource.com/...=181485&page=6

go down about half way and I've posted about 4-5 pictures of the twin holleys i have hangin under my truck and the adapter i made which I have an instruction pdf made to make your own if you like which takes the place of the stock lift pump.

I found the stock pump died and you couldn't flow a mouse fart thru it! so... out come the TIG welder, some stainless and there you have it. Replacement adapter.

That way I can keep the filter, furl heater, water drain, etc. and the wiring harness will run your holleys no problem.