Swap to carb?

[SpeedDensityET]

I have a buddy with an 88 GT with GT40P heads with upgraded valvesprings, Lunati 509 cam (.509, .509, something like 282, 284 duration), GT40 intake, C&L 75mm MAF, Motorsports 1.6 RR, 3.73s, T5, full 2.5" exhaust with off-road pipe. The best MPH the car can run in the 1/8th is 85. Meanwhile cars in town with the same heads, similar cam and equal driving style run 92 MPH, the only exception being that they are carbed. These guys are trying to get him to carb the car, while I keep preaching the driveablity, reliability, and torque of EFI. What do you guys think? Anyone pick up significantly swapping to carburetor? Keep in mind that we have no emissions laws here, and the car is driven very often to work (interstate and town driving).