I'm looking to redo my ISP head pads in my dragster. I find that ISP is out of business and so i'm looking for a company that can re-foam and cover them to 45.2 specs. Any information would be helpful. Thanks.

Several sources online for the padding in sheet form. Any upholstery shop should be able to help you with the covering.
https://www.rollbarpadding.com/product/id-40

Contact Gray Kimble and team at Butler Built Performance.

https://www.butlerbuiltperformance.com/