The Spica system requires a fuel return line to the tank, and a new port in the tank. Different fuel pump at the rear, special fuel filter, pressure idiot light and sender, etc.
Right! There are a lot of ancillary components necessary for Spica besides the pump. And, you would have to mount them on your TI body, as well as acquire them.
Originally Posted by arminyack
I know a Wes Igram pump will cost me well over a grand (or double that depending) ...A good dual crab set up with cost upwards of a gram as well
Wes Ingram will charge ~ a grand to rebuild
a spica pump. But you have to buy the pump first, and rebuildable pumps are pricey. Oh, and don't forget the thermostatic actuator - again, a costly item. So if you have nothing but the intake manifold + throttle bodies, acquiring the rest of the Spica set-up, and having the pump rebuilt, could easily run in the $2K + range.
As you say, a Weber manifold, two carbs, and linkage don't come cheap either. Centerline charges $2,150 for these parts (which are currently out of stock). You might be able to acquire the parts for less from BB sellers, ebay, etc., but not much less.
Still, going with carburetors rather than Spica injection probably makes sense in your situation.