I'm looking to upgrade to a set of Weber's. I need advice on what I should get. I realize what I choose has a lot to do with personal taste, but I want to spend my money wisely. Most of my driving will be on the street with occasional track use. My engine was built for high torque low-RPM. Here is what the Weber's would go in:
My car is a BEC GT40 Mk1 with a 1965 289 SBF, which is bored and stroked to 305 c.i. and currently built to produce 360 HP and 360 foot pounds of torque. It has a balanced assembly, with forged rods, hypereutectic pistons, split-duration (.520/.523) cam, aluminum heads, 1.6 roller-rockers, Edelbrock RPM Air Gap dual-plane intake, 670 Holley Street Avenger Carburator, MSD Electronic Ignition, Ford Racing valve covers, high-volume oil pump, oversized Milodon oil pan with a “bundle-of-snakes” tuned exhaust. Power is transmitted through a custom-prepared Getrag 01E, 6-speed transaxle. The transaxle is beefed-up and rebuilt (upgraded rear main bearings, altered spigot shaft and altered clutch fork), and can comfortably handle 400 HP.
So what should buy? IDA's or IDF's? And how should I have them set up 40's, 42's, 48's? You get the idea.

My car is a BEC GT40 Mk1 with a 1965 289 SBF, which is bored and stroked to 305 c.i. and currently built to produce 360 HP and 360 foot pounds of torque. It has a balanced assembly, with forged rods, hypereutectic pistons, split-duration (.520/.523) cam, aluminum heads, 1.6 roller-rockers, Edelbrock RPM Air Gap dual-plane intake, 670 Holley Street Avenger Carburator, MSD Electronic Ignition, Ford Racing valve covers, high-volume oil pump, oversized Milodon oil pan with a “bundle-of-snakes” tuned exhaust. Power is transmitted through a custom-prepared Getrag 01E, 6-speed transaxle. The transaxle is beefed-up and rebuilt (upgraded rear main bearings, altered spigot shaft and altered clutch fork), and can comfortably handle 400 HP.
So what should buy? IDA's or IDF's? And how should I have them set up 40's, 42's, 48's? You get the idea.