I have a set of custom thickness cometics at .74 compressed thickness. Brand new still in the box from cometic. I bought them thinking i had a blown head gasket but that wasnt the problem. They are 4.040 bore and i couldnt use them on my new engine. I paid 250$ for them ill let them go for 150 obo. Can have pics if wanted

 

For the record these are for a lt1. and Bump