[Dwight Southerland]

The 2bbl engine in this car has a favorable power factor and fits Q at under 3000 lbs with the driver. The 4bbl engine has an unfavorable power factor (65 hp difference between the two engines). The only spec difference between the 2bbl and 4bbl engines is the intake-carb. I would be tempted to try the 2bbl first since the opportunity to work out the car and associated parts would have the advantage of not being so behind the ball performance wise with other competitors in the class.

That being said, the intake manifold is a serious limiting factor on the 2bbl engine.