First, drag radials are MORE THAN enough tire. Quite a few guys are in the 7's and didn't one brand X guy just go 6.99 on DR's?? Second, consider this edited post I did the other day...

The 78 (440, OE crank rods and cast pistons...way down in the hole) was yanked from a wrecked 60K mile Monaco.

To it was added a MP .484 stick, redone 915 heads, (stock ports, OE valve sizes), Eddy Torker, 850 TQ, recurved dizzy, small tube headers (1 3/4"?) 11" hemi converter, 4.56's in a all OE 65 Belvedere Wagon. Best of 12.32 @ 110 open headers on 9" x 28" slicks Car weighed 4,2xx lbs.

The 76 (440 again OE crank rods and cast pistons) was found sitting idle in a 76 3/4 pu that had an been t-boned and rolled in 1980. It was given to me in 1985. So, after SITTING FOR FIVE YEARS:

Tossed in the infamous MP .557 cam, redone 452 heads (2.14/1.81, home ported to MP templates), Holly SD intake, Holley 750 DP, MP elec dizzy, 2" Pro Parts headers, 4.30 gears, 10 x 28" McReary tires in a all OE 72 Duster, with full exhaust. 11.70's were too easy. And I mean OE STOCK 72 Duster. Full interior, all OE glass and sheet metal, flat hood, no scoop, steel rally wheels. Was 3440 with me in the seat according to my old notes.

As far as your OE fuel system not being enough? Guess what both cars above ran? Yep..OE STOCK fuel tanks, 5/16" lines and mechanical pumps. On the Duster, since the motor had been sitting so long, I splurged and got a reman fuel pump. Wooooo whoooo!

Further interesting to note: I added 3/8' alum line and a Carter elec pump to the Duster. Still ran 11.70's. The peanut gallery all said that I needed the "trick" Holley blue pump and bigger line. Okay...in with 1/2" line, a sump added to the tank and that blue pump. Wow...11.70's still.

The junkyard Dart in the pic gave me a best of 11.41 @ 117 with a 5/16" line and auto parts store reman mechanical pump.

Let's consider this from a well known Mopar guy, Mr. Porter:

QUOTE: [the 5/16" fuel line....everyone seems to get all worked up about that.
fact is......in 1995, i had a roller cammed 448 in it with ported 906's. same fuel system, flat hood, crank driven water pump, battery up front.....same 3670lbs.....running well into the 10's @ 125+(best of 10.61).]

I have often wondered why we spend big dollars on billet cement mixer pumps, -8 and -10 lines...just so a .110" needle and seat can meter the fuel. Hmmm

All that said, I'd go run the car right now the way it sits. Make 5 good runs and get a good baseline, go from there. Besides, it's WAY fun chasing and reaching that ET/MPH goal you've set for yourself.