Car presently has a 3.36 rear gear. Will get it running this weekend and drive it a bit with those gears. Get a feel for where the motor likes the load. Have a motor minder to hookup this weekend too. That and a tach. Not hooking up the speedo yet. Use a GPS for speed.
Have no SP2P intake. Never seen one in person. Had thought about using my Brazilian divided intake. It needs a little machine work, not enough time.
The best mileage I ever got w/my 250 was about 21 MPG.
That was w/a 5 speed manual & a 400 CFM Carter AFB. Offy non heated intake.
Is your Brazilian devided intake heated?
How about your other long runner intakes, have you tried those out @ all? The PAS manifold, must be horrible for low end power.