Does anyone know if 12A headers will or can be made to fit on a 13B GSL-SE?

 

no

 

They can, but not worth the trouble IMO. Sell it and get a correct one for your car.

 

What is involed in switching them over. Do the ports not match up or are the bolt holes different?

 

If you have the road race type, then all you have to do is cut the rear flange and it work on a 13-B. If thats the regular header wherein there is a one piece plange (header to engine), then it will require more work. In addition to cutting the rear flange, you will also need to cut the front flange and do some grinding especially if the header will be used on a 6port motor (center engine mounts). I've used a circular carbide blade and grinder.

 

*cough*racing Beat *cough*

 

lol accualy thats what i had on my car when it was carbed...

it was 12a header. cut and re-welded to fit a 6 port 13b.

i did not do it.. the guy who sold the car to me did.

 

sorry about the confusion. the peri-port style is the one without the flange. the road race is the one piece.

 

he must be from my hood to know that trick. lol