your best bet is to talk with dennis , cause i kinda got lost on the final steps of this myself,
so bear with me beacause i want to figure this out as well.
so let me retrace where you are now.
When installing tapered pipe thread fittings in pipe thread ports, DO NOT FORCE this can lead to cracking the port! I have seen this crack a few heads before. so take your time.
I am thinking you have
itp pickup 5/8 to
(- a prefilter base,you may or may not have this, if not skip)
5/8 in to the air dog ,5/8 out, more fuel line
5/8 to the fuel lab , you can prob go 5/8 or 1/2" to the fb delete block.
I am thinking this only needs to be 1/2 and is why you only have 3- 5/8 fittings
then use supplied parts to each head. (pre bent lines going to/ heads to the reg and fb delete block, which i think you already have installed )
now from ITP fb delete instructions comes
"You are now left with needing to make the connections to the supply and return ports. Fuel supply (from your fuellab pump) will enter the top of the ITP Fuel Bowl Delete block. We’ve(itp) supplied a #6 Male JIC fitting and recommend using a hose with a 90° end to make the cleanest connection.
Fuel return (from the engine back to the tank) comes from the bottom of the
regulator. We’ve (itp) again supplied a #6 Male JIC fitting, but here we recommend a hose with a 45° fitting to make a nice clean arc up out of the valley.
You will need to source other parts to complete these connections as they are not included in this kit."
I am thinking you just need to get a 1/2 conector for the fuelab out
some 1/2 line to run from the fuel lab to the fb delete.
Now I would add some kind of a 2-3 micron filter on this line to protect your injectors from any crud. but put this closer to the fb delete block, like right under floor bords.
but your still left with return line off the fb delete block, going to the reg , and the line going to the tank.
This I'd have to say talk with dennis, he can put it in terms easy to follow. ( i kinda got lost here too)
I think I have followed where you are with the install, you just need a few more odds and ends.
but will have an awsome fuel system.