the mcmaster stuff is identical to dyanamat. i think i used like 4 rolls total. for the door panels you want liquid, for the door skins you want mat. spray on you can use ruber undercarriage paint.
you can also get this pastelike stuff from home depot/lowes called kool seal elastromic(sp) roof coating. it ccan be applied by brush or get a spray compressor

javi d
vroom n' boom
bone-stock dsm performance :)