NO Belly Pan, No blocked off grills or headlight openings. Thats the rules... Damn. The class I would run in to set that record is Modified Pickup. The rules of Street gas coupe apply I found these on the Austrailian website, but these rules also apply to the Bonneville runs.
Modified
This category encompasses American and foreign coupes, sedans and pickups (with full stock beds), unaltered in height, width or contour, and with all stock panels mounted in original relationship to each other, which have been modified to such an extent as to no longer fit into the production category. Cars generally accepted as sports or Gran Tourissimo coupes are specifically forbidden. A generic requirement for this category is that the car must have been originally produced with suitable seating for four (4) average adult persons.
Within the Modified category, the amount of modification determines the class. For example, a Gas Coupe is basically a Production car with an engine swap, an Altered is a Gas Coupe with headlights and grille covered and the engine set back, a Competition Coupe is an Altered with the nose lengthened and streamlined.
Front air dams are permitted in the Modified Category. The air dam may be either identical to an OEM option for the body used, available as an aftermarket part or fabricated. The air dam may extend straight down from the front bumper and may extend rearward to the leading edge of the front wheel well. The air dam must follow the contour of the leading edge of the front bumper unless the air dam is an OEM item. The air dam may be set back from the front bumper, but in no case can the air dam extend forward or above the leading edge of the front bumper.
Vehicles competing in the Competition Coupe and Modified Sports classes must have documentation showing the stock vehicle BEFORE modification.
It is REQUIRED that vehicles in this category which exceed 200 MPH, or if the existing record is over 200 MPH, must have roof rails.
Competition Coupe & Sedan: /BFCC, /FCC, /BGCC, /GCC
Production coupe or sedan body unaltered in width or contour. Streamlining ahead of and including the cowl, channeling, belly pans and skirts and spoilers as defined in section IV-24 h) are permitted. One of the following modifications must be done to be considered in this class:
1) Top must be chopped;
2) It must have a full belly pan;
3) Body from the cowl forward must be lengthened a minimum of 12"; and
4) Engine must be set back a minimum of 25%.
Other than top chopping, no modification to the body or quarter panels is allowed. Minimum windshield height is 5". The front and rear chop must be equal. Window openings may be covered by flat plates on the outside of the opening or left open. Driver must sit COMPLETELY ahead of the rear axle, inside body and behind the engine (except in rear engine cars using original engine LOCATION). Engine may be set back 50% of the wheelbase. Driver exit hatches in the roof are recommended, but must not change the contour of the body. Cars in this class are considered in the Modified category and must comply with general rules of the category.
NOTE: Entrants electing to use a pre-1949 body in the Competition Coupe classes need not comply with the seating requirement for four (4) average size adults. The rear inner fender panels may be modified to allow the rear tires to be located within the body. This allowance does NOT apply to Vintage Category. Drip rails may be removed.
Engine classes allowed are: AA, A, B, C, D, E, F, G, H, I, XF, XO, XXF, XXO, XF/V, XO/V, XXF/V, XXO/V & V4/V
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