LIMITED LATE MODEL RULES:

A. (BY THE 2025 NASCAR RULE BOOK WITH THE FOLLOWING EXCEPTIONS) 

B. OVERALL CAR WEIGHT (total/right side) - CARB requirements:

1. GM 604 crate: (3050/1350)                       500 2bbl HPX or Ultra / any .75” alum spacer
2. LMSC Built (Steel Head): (3050/1350)     450 carb / any .75" alum spacer
3. Chevy Spec Upgrade: (3125/1415)              450 carb / .75” 2 hole non tapered spacer  
4. Ford 347 SR crate: (3100/1400)               450 carb /  .75” 2 hole non tapered spacer
5. HMS Enforcer: (3100/1400)                     450 carb / .75” 2 hole non tapered spacer
6. Dillon 70cc: (3075/1350)                           500 2bbl HPX or Ultra / any .75” alum spacer

Clarification:

450 Carb is 500 top with a 350 bottom. The only 500 Tops allowed are 4412 or HP 500 with 350 bottom pt # 2300. NO modifications permitted outside NASCAR Tech Specs

C. SHOCKS / BUMP STOPS 

1. Shocks and Bump Stops will be permitted in accordance with the 2025 NASCAR RULE BOOK
2. In addition, AFCO and PRO shocks will be legal WITHOUT BASE VALVES.

D. BODY / MISCELLANEOUS

1. Must have rocker panels on both sides of the car. The rocker panels must be of matching thickness on both sides with either steel or aluminum. Must be the same metal on both sides. 
2. Maximum width of body parts and side skirts between the front and rear tires is 77 1/2". The right door and quarter panel must be flat and not concaved in. 
3. The rear window must have a vertical brace in it to keep it from pushing in. The rear and side windows must have all the screws / rivets in and tight. 
4. If any of the body components cannot be fixed, you will add 25 lbs to the right side.