I just recently swapped out the factory spread bore carb 4300D ?? for an Edelbrock 1405. The car stranded me countless times prior to the new carb being installed.
I had to get the Trans Adapt spread bore adapter (#2199) so the carb venturis would match up with the intake. THE EDELBROCK SPREAD BORE ADAPTER DOES NOT WORK WITH THE FORD SPREAD BORE INTAKE !!! Lets just say I could have saved some $$ if I had known that.
I can finally drive and enjoy the car. I fabbed a throttle cable (extension) bracket to move the bracket right about 1.5". I also made my own C6 kickdown linkage extension to adapt to the Ford linkage on the carb. Fabbed those brackets from aluminum stock from home depot.
You won't need the tranny linkage since you have a 4 speed.
The PCV goes to the front of the carb now, so I removed the original hose and got a 1/2" 90 degree elbow, a 1/2 to 3/8" hose adapter, and ran the pcv to the front of the carb (as recommended by Edelbrock). The PCV is 1/2" and the fitting at the front of the carb is 3/8".
Other than setting the idle mixture screws and adjusting the kickdown linkage, I haven't had to mess with the carb itself, and it runs awesome.
Oh - there are three different fuel inlet types available for the Edelbrocks. The one that comes with he carb just sticks straight out from the side of he carb. Then, there's a banjo fitting #8089 which will redirect your fuel line straight down or towards the back, or #8126 which is a hard line which runs down then straight out to the left front of the carb. So - i didn't think he original fitting would have worked with the stock air cleaner, so I ordered the banjo fitting but that didn't work because it hits the manual choke bracket, sooooo - I ended up with the fixed line coming out the front.
I didn't want to cut my rigid fuel line, so that crowds things a little, since you have o fit an in-line filter in those few inches between the fuel line and the fuel inlet.
Watch Ebay. I got my carb off there for $200, (incl shipping). It also included the Ford transmission linkage - another $26 if new.
The carb was virtually brand new. There are lots of Edelbrock carbs on there - some new/almost new - some reconditioned, and some looking well used.
Hope this helps.