how to i tell if a car is a sx , the vin is same as a cutlass supreme, nothing on trim tag says y79, has 455,2bbl,t400

 

Does it have E heads or an SX emblem on the fender.

 

you cant tell by the vin, look for a build sheet thats the best way 2 tell 100%, they made 455 2bbl regular cutlass's and cutlass sx's all late built 455 4bbl supremes were cutlass sx's, look for a original looking fender brace, rear swar bar, and dual exaust with trumpits, good luck

 

yes it has sx fender emblem, where would i find the build sheet -top of gas tank or rear seat?

 

If it is Lansing built, you may not. Try under the back seat first. That's easier to get to.

 

Somewhere in the car if it's still there. Since it was scrap paper after its use there was no specific place it was disposed of.

 

vin shows built in freemont,ca

 

X2. I also have a 70 2bbl SX