I'm using a TBI unit from a 90's Astrovan 2.5L. I already have an adapter plate for the 2BBL carb I am running instead of the Solex.

I'd rather increase the pulse rate than shorten it i.e, adjusting the short milliseconds burst to fire a tad longer to compensate for the 2.8L 6 cylinder as opposed to shortening it for a lesser fuel requirements of the larger engines. The fewer "opens and shuts" the better for an electronic device.

I'm using a "surge" tank mounted up front for three reasons. I can use a standard Bosch in-tank pump, (available for $50 at any Autozoo), ease of wiring and I don't trust the old supply line on my 34 year old car for the rigors of 3 bar (45 psi) pressure. I am using the existing return line because of the heat issues involved with the short line length. The surge tank will be supplied by the existing electric fuel pump.

I'm still figuring out an "engine running" switch for a fail-safe on the pump. It'll probably involve something from the distributor side of the coil.