Insulation, Peel n seal and other budget insulation ideas

Its funny, I was just describing my Dart Swinger recently and it went something like "...bench seat, four speed on the floor, no A/C...." A/C is taken for granted in newer vehicles it was a luxury back in the day. I just ordered the firewall insulation and undercowl insulation. The undercowl insulation looks like the old jute padding that goes under carpet, and the firewall insulation looks like fiberglass insulation with a pressboard backing. I am thinking this stuff could be home made if need be, and using the old pressboard backing as a template to trace and cut new. Although Mega parts has the new replacement stuff priced fairly good IMO. If you were to do a home made thing, I would try visiting carpet shops and get some carpet pad scraps, fiberglass insulation is at Lowe's as well as the pressboard. If you want it to look correct, you can paint the pressboard black.